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struct/array
This is backport of CL 3651594, with the test from CL 360057.
CL 360057 fixed missing update source type in storeArgOrLoad. However,
we should only update the type when processing struct/array. If we
update the type right before calling storeArgOrLoad, we may generate a
value with invalid type, e.g, OpStructSelect with non-struct type.
Fixes #49391
Change-Id: Ib7e10f72f818880f550aae5c9f653db463ce29b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/361594
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/361597
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
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range for arm
Ensure constant shift amounts are in the range [0-31]. When shift amounts
are out of range, bad things happen. Shift amounts out of range occur
when lowering 64-bit shifts (we take an in-range shift s in [0-63] and
calculate s-32 and 32-s, both of which might be out of [0-31]).
The constant shift operations themselves still work, but their shift
amounts get copied unmolested to operations like ORshiftLL which use only
the low 5 bits. That changes an operation like <<100 which unconditionally
produces 0, to <<4, which doesn't.
Fixes #48478
Change-Id: I87363ef2b4ceaf3b2e316426064626efdfbb8ee3
Reviewed-on: https://go-review.googlesource.com/c/go/+/350969
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
(cherry picked from commit eff27e858b771bf5e0b5e7e836827c7d2941e6d4)
Reviewed-on: https://go-review.googlesource.com/c/go/+/351070
Reviewed-by: Austin Clements <austin@google.com>
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Fixes #48474
Change-Id: Ic1e918f916eae223a3b530a51a58f03031924670
Reviewed-on: https://go-review.googlesource.com/c/go/+/350913
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/351072
Reviewed-by: Austin Clements <austin@google.com>
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In CL 326211 a change was made to switch "go.map.zero" symbols from
non-pkg DUPOK symbols to hashed symbols. The intent of this change was
ensure that in cases where there are multiple competing go.map.zero
symbols feeding into a link, the largest map.zero symbol is selected.
The change was buggy, however, and resulted in duplicate symbols in
the final binary (see bug cited below for details). This duplication
was relatively benign for linux/ELF, but causes duplicate definition
errors on Windows.
This patch switches "go.map.zero" symbols back from hashed symbols to
non-pkg DUPOK symbols, and updates the relevant code in the loader to
ensure that we do the right thing when there are multiple competing
DUPOK symbols with different sizes.
Fixes #47289.
Change-Id: I8aeb910c65827f5380144d07646006ba553c9251
Reviewed-on: https://go-review.googlesource.com/c/go/+/334930
Trust: Than McIntosh <thanm@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
(cherry picked from commit 49402bee36fd3d5cee9f4b2d2e1e8560ead0203b)
Reviewed-on: https://go-review.googlesource.com/c/go/+/335629
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The compiler machinery that generates "map.zero" symbols marks them as
RODATA and DUPOK, which is problematic when a given application has
multiple map zero symbols (from different packages) with varying
sizes: the dupok path in the loader assumes that if two symbols have
the same name, it is safe to pick any of the versions. In the case of
map.zero, the link needs to select the largest symbol, not an
arbitrary sym.
To fix this problem, mark map.zero symbols as content-addressable,
since the loader's content addressability processing path already
supports selection of the larger symbol in cases where there are dups.
Fixes #46657.
Change-Id: Iabd2feef01d448670ba795c7eaddc48c191ea276
Reviewed-on: https://go-review.googlesource.com/c/go/+/326211
Trust: Than McIntosh <thanm@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
(cherry picked from commit aa5540cd82170f82c6fe11511e12de96aa58cbc1)
Reviewed-on: https://go-review.googlesource.com/c/go/+/326212
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Under certain circumstances, the existing rules for bit operations can
produce code that writes beyond its intended bounds. For example,
consider the following code:
func repro(b []byte, addr, bit int32) {
_ = b[3]
v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 | 1<<(bit&31)
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
b[3] = byte(v >> 24)
}
Roughly speaking:
1. The expression `1 << (bit & 31)` is rewritten into `(SHLL 1 bit)`
2. The expression `uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 |
uint32(b[3])<<24` is rewritten into `(MOVLload &b[0])`
3. The statements `b[0] = byte(v) ... b[3] = byte(v >> 24)` are
rewritten into `(MOVLstore &b[0], v)`
4. `(ORL (SHLL 1, bit) (MOVLload &b[0]))` is rewritten into
`(BTSL (MOVLload &b[0]) bit)`. This is a valid transformation because
the destination is a register: in this case, the bit offset is masked
by the number of bits in the destination register. This is identical
to the masking performed by `SHL`.
5. `(MOVLstore &b[0] (BTSL (MOVLload &b[0]) bit))` is rewritten into
`(BTSLmodify &b[0] bit)`. This is an invalid transformation because
the destination is memory: in this case, the bit offset is not
masked, and the chosen instruction may write outside its intended
32-bit location.
These changes fix the invalid rewrite performed in step (5) by
explicitly maksing the bit offset operand to `BT(S|R|C)(L|Q)modify`. In
the example above, the adjusted rules produce
`(BTSLmodify &b[0] (ANDLconst [31] bit))` in step (5).
These changes also add several new rules to rewrite bit sets, toggles,
and clears that are rooted at `(OR|XOR|AND)(L|Q)modify` operators into
appropriate `BT(S|R|C)(L|Q)modify` operators. These rules catch cases
where `MOV(L|Q)store ((OR|XOR|AND)(L|Q) ...)` is rewritten to
`(OR|XOR|AND)(L|Q)modify` before the `(OR|XOR|AND)(L|Q) ...` can be
rewritten to `BT(S|R|C)(L|Q) ...`.
Overall, compilecmp reports small improvements in code size on
darwin/amd64 when the changes to the compiler itself are exlcuded:
file before after Δ %
runtime.s 536464 536412 -52 -0.010%
bytes.s 32629 32593 -36 -0.110%
strings.s 44565 44529 -36 -0.081%
os/signal.s 7967 7959 -8 -0.100%
cmd/vendor/golang.org/x/sys/unix.s 81686 81678 -8 -0.010%
math/big.s 188235 188253 +18 +0.010%
cmd/link/internal/loader.s 89295 89056 -239 -0.268%
cmd/link/internal/ld.s 633551 633232 -319 -0.050%
cmd/link/internal/arm.s 18934 18928 -6 -0.032%
cmd/link/internal/arm64.s 31814 31801 -13 -0.041%
cmd/link/internal/riscv64.s 7347 7345 -2 -0.027%
cmd/compile/internal/ssa.s 4029173 4033066 +3893 +0.097%
total 21298280 21301472 +3192 +0.015%
Fixes #45253
Change-Id: I2e560548b515865129e1724e150e30540e9d29ce
GitHub-Last-Rev: ab94ede1d097f920a9d1d3da403c8e4a3d8f6d44
GitHub-Pull-Request: golang/go#45242
Reviewed-on: https://go-review.googlesource.com/c/go/+/305069
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Keith Randall <khr@golang.org>
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intertwined phi values
We need to be careful that when doing value graph surgery, we not
re-substitute a value that has already been substituted. That can lead
to confusing a previous iteration's value with the current iteration's
value.
The simple fix in this CL just aborts the optimization if it detects
intertwined phis (a phi which is the argument to another phi). It
might be possible to keep the optimization with a more complicated
CL, but:
1) This CL is clearly safe to backport.
2) There were no instances of this abort triggering in
all.bash, prior to the test introduced in this CL.
Fixes #45192
Change-Id: I2411dca03948653c053291f6829a76bec0c32330
Reviewed-on: https://go-review.googlesource.com/c/go/+/304251
Trust: Keith Randall <khr@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
(cherry picked from commit 771c57e68ed5ef2bbb0eafc0d48419f59d143932)
Reviewed-on: https://go-review.googlesource.com/c/go/+/304530
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results
One of escape analysis's responsibilities is to summarize whether/how
each function parameter flows to the heap so we can correctly
incorporate those flows into callers' escape analysis data flow
graphs.
As an optimization, we separately record when parameters flow to
result parameters, so that we can more precisely analyze parameter
flows based on how the results are used at the call site. However, if
a named result parameter itself needs to be heap allocated, this
optimization isn't safe and the parameter needs to be recorded as
flowing to heap rather than flowing to result.
Escape analysis used to get this correct because it conservatively
rewalked the data-flow graph multiple times. So even though it would
incorrectly record the result parameter flow, it would separately find
a flow to the heap. However, CL 196811 (specifically, case 3)
optimized the walking logic to reduce unnecessary rewalks causing us
to stop finding the extra heap flow.
This CL fixes the issue by correcting location.leakTo to be sensitive
to sink.escapes and not record result-flows when the result parameter
escapes to the heap.
Fixes #44659.
Change-Id: I48742ed35a6cab591094e2d23a439e205bd65c50
Reviewed-on: https://go-review.googlesource.com/c/go/+/297289
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/go/+/297290
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arguments with call method in go/defer
In CL 253457, we did the same fix for direct function calls. But for
method calls, the receiver argument also need to be passed through the
wrapper function, which we are not doing so the compiler crashes with
the code in #44415.
It will be nicer if we can rewrite OCALLMETHOD to normal OCALLFUNC, but
that will be for future CL. The passing receiver argument to wrapper
function is easier for backporting to go1.16 branch.
Fixes #44464
Change-Id: I03607a64429042c6066ce673931db9769deb3124
Reviewed-on: https://go-review.googlesource.com/c/go/+/296490
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Reviewed-on: https://go-review.googlesource.com/c/go/+/296769
Trust: Bryan C. Mills <bcmills@google.com>
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obfuscated code
DWARF generation uses variable source positions (file/line/col) as a
way to uniquely identify locals and parameters, as part of the process
of matching up post-optimization variables with the corresponding
pre-optimization versions (since the DWARF needs to be in terms of the
original source constructs).
This strategy can run into problems when compiling obfuscated or
machine-generated code, where you can in some circumstances wind up
with two local variables that appear to have the same name, file,
line, and column. This patch changes DWARF generation to skip over
such duplicates as opposed to issuing a fatal error (if an
obfuscation tool is in use, it is unlikely that a human being will be
able to make much sense of DWARF info in any case).
Fixes #44433.
Change-Id: I198022d184701aa9ec3dce42c005d29b72d2e321
Reviewed-on: https://go-review.googlesource.com/c/go/+/294289
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
(cherry picked from commit e78e04ce39b9df316edda08f43f253f5e9ac509e)
Reviewed-on: https://go-review.googlesource.com/c/go/+/294789
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empty returns
The code for delayed declaration of inlined result parameters only
handles non-empty return statements. This is generally okay, because
we already early declare if there are any (non-blank) named result
parameters.
But if a user writes a function with only blank result parameters and
with exactly one return statement, which is empty, then they could end
up hitting the dreaded "Value live at entry" ICE.
This CL fixes the issue by ensuring we always early declare inlined
result parameters if there are any empty return statements.
Fixes #44358.
Change-Id: I315f3853be436452883b1ce31da1bdffdf24d506
Reviewed-on: https://go-review.googlesource.com/c/go/+/293293
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Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/296569
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For functions that call reflect.Type.Method (or MethodByName), we
mark it as REFLECTMETHOD, which tells the linker that methods
can be retrieved via reflection and the linker keeps all exported
methods live. Currently, this marking expects exactly the
interface call reflect.Type.Method (or MethodByName). But now the
compiler can devirtualize that call to a concrete call
reflect.(*rtype).Method (or MethodByName), which is not handled
and causing the linker to discard methods too aggressively.
Handle the latter in this CL.
Fixes #44207.
Change-Id: Ia4060472dbff6ab6a83d2ca8e60a3e3f180ee832
Reviewed-on: https://go-review.googlesource.com/c/go/+/290950
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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CL 279423 introduced a regression in this test as it incorrectly laid
out various instructions. In the case of arm, the second instruction
was overwriting the first. In the case of 386, amd64 and s390x, the
instructions were being appended to the end of the slice after 64
zero bytes.
This was causing test failures on "linux/s390x on z13".
Fixes #44028
Change-Id: Id136212dabdae27db7e91904b0df6a3a9d2f4af4
Reviewed-on: https://go-review.googlesource.com/c/go/+/288278
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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CL 261677 fixed a logic issue in walk's alias detection, where it was
checking the RHS expression instead of the LHS expression when trying
to determine the kind of assignment. However, correcting this exposed
a latent issue with assigning to result parameters in functions with
defers, where an assignment could become visible earlier than intended
if a later expression could panic.
Fixes #43835.
Change-Id: I061ced125e3896e26d65f45b28c99db2c8a74a8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/285633
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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This will produce better errors when earlier versions of
Go compile code using //go:embed. (The import will cause
a compilation error but then the go command will add to
the output that the Go toolchain in use looks too old
and maybe that's the problem.)
This CL also adds a test for disallowing embed of a var inside a func.
It's a bit too difficult to rebase down into that CL.
The build system configuration check is delayed in order to
make it possible to use errorcheck for these tests.
Change-Id: I12ece4ff2d8d53380b63f54866e8f3497657d54c
Reviewed-on: https://go-review.googlesource.com/c/go/+/282718
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
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Consider the following example,
func test(a, b float64, x uint64) uint64 {
if a < b {
x = 0
}
return x
}
func main() {
fmt.Println(test(1, math.NaN(), 123))
}
The output is 0, but the expectation is 123.
This is because the rewrite rule
(CSEL [cc] (MOVDconst [0]) y flag) => (CSEL0 [arm64Negate(cc)] y flag)
converts
FCMP NaN, 1
CSEL MI, 0, 123, R0 // if 1 < NaN then R0 = 0 else R0 = 123
to
FCMP NaN, 1
CSEL GE, 123, 0, R0 // if 1 >= NaN then R0 = 123 else R0 = 0
But both 1 < NaN and 1 >= NaN are false. So the output is 0, not 123.
The root cause is arm64Negate not handle negation of floating comparison
correctly. According to the ARM manual, the meaning of MI, GE, and PL
are
MI: Less than
GE: Greater than or equal to
PL: Greater than, equal to, or unordered
Because NaN cannot be compared with other numbers, the result of such
comparison is unordered. So when NaN is involved, unlike integer, the
result of !(a < b) is not a >= b, it is a >= b || a is NaN || b is NaN.
This is exactly what PL means. We add NotLessThanF to represent PL. Then
the negation of LessThanF is NotLessThanF rather than GreaterEqualF. The
same reason for the other floating comparison operations.
Fixes #43619
Change-Id: Ia511b0027ad067436bace9fbfd261dbeaae01bcd
Reviewed-on: https://go-review.googlesource.com/c/go/+/283572
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Trust: Keith Randall <khr@golang.org>
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I have a real 7,000-line Go program (not so big)
that took over two minutes to report a trivial init cycle.
I thought the compiler was in an infinite loop but
it was actually just very slow.
CL 170062 rewrote init cycle reporting but replaced
a linear-time algorithm with an exponential one:
it explores all paths through the call graph of functions
involved in the cycle.
The net effect was that Go 1.12 took 0.25 seconds to load,
typecheck, and then diagnose the cycle in my program,
while Go 1.13 takes 600X longer.
This CL makes the new reporting code run in linear time,
restoring the speed of Go 1.12 but preserving the semantic
fixes from CL 170062.
Change-Id: I7d6dc95676d577d9b96f5953b516a64db93249bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/282314
Trust: Russ Cox <rsc@golang.org>
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When running go tool compile,
go tool is running compile as a subprocess.
Killing go tool with Process.Kill leaves the subprocess behind.
Send an interrupt signal first, which it can forward on
to the compile subprocess.
Also report the timeout in errorcheck -t.
Change-Id: I7ae0029bbe543ed7e60e0fea790dd0739d10bcaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/282313
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Current optimization: When we copy a->b and then b->c, we might as well
copy a->c instead of b->c (then b might be dead and go away).
*Except* if a is a volatile location (might be clobbered by a call).
In that case, we really do want to copy a immediately, because there
might be a call before we can do the a->c copy.
User calls can't happen in between, because the rule matches up the
memory states. But calls inserted for memory barriers, particularly
runtime.typedmemmove, can.
(I guess we could introduce a register-calling-convention version
of runtime.typedmemmove, but that seems a bigger change than this one.)
Fixes #43570
Change-Id: Ifa518bb1a6f3a8dd46c352d4fd54ea9713b3eb1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/282492
Trust: Keith Randall <khr@golang.org>
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For the example in #43551, before late call expansion, the OpArg type is
decomposed to int64. But the late call expansion is currently decompose
it to "x.Key" instead.
This CL make expand_calls decompose further for struct { 1-field type }
and array [1]elem.
This matches the previous rules for early decompose args:
(StructSelect (StructMake1 x)) => x
(ArraySelect (ArrayMake1 x)) => x
Fixes #43551
Change-Id: I2f1ebe18cb81cb967f494331c3d237535d2859e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/282332
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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In issue11656.go, it tests that if the runtime can get a
reasonable traceback when it faults at a non-function PC. It does
it by jumping to an address that contains an illegal or trap
instruction. When it traps, the SIGTRAP crashes the runtime.
This CL changes it to use an instruction that triggers SIGSEGV.
This is due to two reasons:
- currently, the handling of bad PC is done by preparePanic,
which is only used for a panicking signal (SIGSEGV, SIGBUS,
SIGFPE), not a fatal signal (e.g. SIGTRAP).
- the test uses defer+recover to get a traceback, which only
works for panicking signals, not fatal signals.
Ideally, we should handle all kinds of faults (SIGSEGV, SIGBUS,
SIGILL, SIGTRAP, etc.) with a nice traceback. I'll leave this
for the future.
This CL also adds RISCV64 support.
Fixes #43283.
Change-Id: I5e0fbf8530cc89d16e05c3257d282bc1d4d03405
Reviewed-on: https://go-review.googlesource.com/c/go/+/279423
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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For #11656
For #43283
Change-Id: I1fcf2b24800f421e36201af43130b487abe605b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/279312
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Previously, reassigned was failing to detect reassignments due to
channel receives in select statements (OSELRECV, OSELRECV2), or due to
standalone 2-value receive assignments (OAS2RECV). This was reported
as a devirtualization panic, but could have caused mis-inlining as
well.
Fixes #43292.
Change-Id: Ic8079c20c0587aeacff9596697fdeba80a697b12
Reviewed-on: https://go-review.googlesource.com/c/go/+/279352
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
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The issue11656 code was using the trap instruction as a PC value,
but it is intended to call a PC value that contains the trap instruction.
It doesn't matter too much as in practice the address is not
executable anyhow. But may as well have the code act the way it
is documented to act.
Also, don't run the test with gccgo/GoLLVM, as it can't work.
The illegal instruction will have no unwind data, so the unwinder
won't be able to get past it. In other words, gccgo/GoLLVM suffer
from the exact problem that the issue describes, but it seems insoluble.
For golang/go#11656
Change-Id: Ib2e50ffc91d215fd50e78f742fafe476c92d704e
Reviewed-on: https://go-review.googlesource.com/c/go/+/278473
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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The language spec only requires a signed binary exponent of 16 bits
for floating point constants. Permit a "exponent too large" error for
larger exponents.
Don't run test 11326b with gccgo, as it requires successful compilation
of floating point constants with exponents that don't fit in 16 bits.
Change-Id: I98688160c76864aba525a151a14aaaf86bc36a6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/279252
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
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Change the run.go driver to recognize the "gc" build tag.
Change existing tests to use the "gc" build tag if they use some
feature that seems specific to the gc compiler, such as passing specific
options to or expecting specific behavior from "go tool compile".
Change tests to use the "!gccgo" build tag if they use "go build" or
"go run", as while those might work with compilers other than gc, they
won't work with the way that gccgo runs its testsuite (which happens
independently of the go command).
For #43252
Change-Id: I666e04b6d7255a77dfc256ee304094e3a6bb15ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/279052
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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fixedbugs/bug195.go:9:20: error: interface contains embedded non-interface
fixedbugs/bug195.go:12:20: error: interface contains embedded non-interface
fixedbugs/bug195.go:15:22: error: interface contains embedded non-interface
fixedbugs/bug195.go:18:9: error: invalid recursive interface
fixedbugs/bug195.go:26:9: error: invalid recursive interface
fixedbugs/bug251.go:15:9: error: invalid recursive interface
fixedbugs/issue23823.go:15:9: error: invalid recursive interface
Change-Id: If4c22430557459d5b361beda7168f8cb42b58811
Reviewed-on: https://go-review.googlesource.com/c/go/+/278512
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
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fixedbugs/issue11614.go:14:9: error: interface contains embedded non-interface
fixedbugs/issue11614.go:22:20: error: interface contains embedded non-interface
Change-Id: Ie9875916697833f5fa28ab890218851a741120ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/278175
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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The gofrontend code sees that the denominator is not zero,
so it computes the values. Dividing zero by a non-zero value
produces zero. The language spec doesn't require any of these
cases to report an error, so make the errors compiler-specific.
Change-Id: I5ed759a3121e38b937744d32250adcbdf2c4d3c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/278117
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
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The bug429 tests is an exact duplicate of TestSimpleDeadlock in the
runtime package. The runtime package is the right place for this test,
and the version in the runtime package will run faster as the build
step is combined with other runtime package tests.
Change-Id: I6538d24e6df8e8c5e3e399d3ff37d68f3e52be56
Reviewed-on: https://go-review.googlesource.com/c/go/+/278173
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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The language spec only requires that floating point values be
represented with 256 bits, which is about 1e75. The issue11371 test
was assuming that the compiler could represent 1e100. Adjusting the
test so that it only assumes 256 bits of precision still keeps the
test valid, and permits it to pass when using the gofrontend.
Change-Id: I9d1006e9adc9438277f4b8002488c912e5d61cc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/278116
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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With the gc compiler the import path implies the package path,
so keeping a canonical path is important. With the gofrontend
this is not the case, so we don't need to report this as a bug.
Change-Id: I245e34f9b66383bd17e79438d4b002a3e20aa994
Reviewed-on: https://go-review.googlesource.com/c/go/+/278115
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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The pattern in NNN.dir directories is that if we have a.go,
the other files import "./a". For gc it happens to work to use a path,
but not for gofrontend. Better to be consistent.
Change-Id: I2e023cbf6bd115f9fb77427b097b0ff9b9992f17
Reviewed-on: https://go-review.googlesource.com/c/go/+/278113
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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fixedbugs/issue26416.go:24:16: error: unknown field ‘t1f1’ in ‘t2’
fixedbugs/issue26416.go:25:16: error: unknown field ‘t1f2’ in ‘t3’
fixedbugs/issue26416.go:26:16: error: unknown field ‘t2f1’ in ‘t3’
fixedbugs/issue26616.go:15:9: error: single variable set to multiple-value function call
fixedbugs/issue26616.go:9:5: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:12:13: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:13:13: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:15:9: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:14:11: error: incompatible types in assignment (multiple-value function call in single-value context)
fixedbugs/issue26855.go:23:12: error: incompatible type for field 1 in struct construction
fixedbugs/issue26855.go:27:12: error: incompatible type for field 1 in struct construction
fixedbugs/issue25958.go:14:18: error: expected ‘<-’ or ‘=’
fixedbugs/issue25958.go:15:35: error: expected ‘<-’ or ‘=’
fixedbugs/issue28079b.go:13:9: error: array bound is not constant
fixedbugs/issue28079b.go:16:22: error: invalid context-determined non-integer type for left operand of shift
fixedbugs/issue28079c.go:14:22: error: invalid context-determined non-integer type for left operand of shift
fixedbugs/issue28450.go:9:19: error: ‘...’ only permits one name
fixedbugs/issue28450.go:10:18: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:11:16: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:11:24: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:13:25: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:15:19: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:16:21: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:16:31: error: ‘...’ must be last parameter
fixedbugs/issue28268.go:20:1: error: method ‘E’ redeclares struct field name
fixedbugs/issue28268.go:19:1: error: method ‘b’ redeclares struct field name
fixedbugs/issue27356.go:14:14: error: expected function
fixedbugs/issue27356.go:18:9: error: expected function
fixedbugs/issue29855.go:13:11: error: unknown field ‘Name’ in ‘T’
fixedbugs/issue27938.go:14:15: error: expected package
fixedbugs/issue27938.go:18:13: error: expected package
fixedbugs/issue27938.go:22:13: error: expected package
fixedbugs/issue27938.go:22:9: error: expected signature or type name
fixedbugs/issue29870b.go:13:9: error: ‘x’ declared but not used
fixedbugs/issue30085.go:10:18: error: wrong number of initializations
fixedbugs/issue30085.go:11:21: error: wrong number of initializations
fixedbugs/issue30087.go:10:18: error: wrong number of initializations
fixedbugs/issue30087.go:11:11: error: number of variables does not match number of values
fixedbugs/issue30087.go:12:9: error: wrong number of initializations
fixedbugs/issue30087.go:13:9: error: wrong number of initializations
fixedbugs/issue28926.go:16:14: error: use of undefined type ‘G’
fixedbugs/issue28926.go:18:14: error: use of undefined type ‘E’
fixedbugs/issue28926.go:22:24: error: use of undefined type ‘T’
fixedbugs/issue30722.go:13:13: error: invalid numeric literal
fixedbugs/issue30722.go:14:13: error: invalid numeric literal
fixedbugs/issue30722.go:15:13: error: invalid numeric literal
fixedbugs/issue33308.go:12:19: error: invalid context-determined non-integer type for left operand of shift
fixedbugs/issue33386.go:16:9: error: expected operand
fixedbugs/issue33386.go:22:9: error: expected operand
fixedbugs/issue33386.go:26:17: error: expected operand
fixedbugs/issue33386.go:27:18: error: expected operand
fixedbugs/issue33386.go:28:29: error: expected operand
fixedbugs/issue33386.go:15:17: error: reference to undefined name ‘send’
fixedbugs/issue33386.go:27:13: error: reference to undefined name ‘a’
fixedbugs/issue33386.go:21:19: error: value computed is not used
fixedbugs/issue33460.go:34:10: error: duplicate key in map literal
fixedbugs/issue33460.go:21:9: error: duplicate case in switch
fixedbugs/issue33460.go:24:9: error: duplicate case in switch
fixedbugs/issue33460.go:25:9: error: duplicate case in switch
fixedbugs/issue32723.go:12:14: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:13:13: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:16:16: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:17:16: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:18:15: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:21:15: error: invalid comparison of non-ordered type
fixedbugs/issue35291.go:13:9: error: duplicate value for index 1
fixedbugs/issue38745.go:12:12: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:13:16: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:17:19: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:17:9: error: not enough arguments to return
fixedbugs/issue41500.go:16:22: error: incompatible types in binary expression
fixedbugs/issue41500.go:17:26: error: incompatible types in binary expression
fixedbugs/issue41500.go:18:22: error: incompatible types in binary expression
fixedbugs/issue41500.go:19:26: error: incompatible types in binary expression
fixedbugs/issue41575.go:23:6: error: invalid recursive type
fixedbugs/issue41575.go:9:6: error: invalid recursive type ‘T1’
fixedbugs/issue41575.go:13:6: error: invalid recursive type ‘T2’
fixedbugs/issue41575.go:17:6: error: invalid recursive type ‘a’
fixedbugs/issue41575.go:18:6: error: invalid recursive type ‘b’
fixedbugs/issue41575.go:19:6: error: invalid recursive type ‘c’
fixedbugs/issue41575.go:25:6: error: invalid recursive type ‘g’
fixedbugs/issue41575.go:32:6: error: invalid recursive type ‘x’
fixedbugs/issue41575.go:33:6: error: invalid recursive type ‘y’
fixedbugs/issue4215.go:10:9: error: not enough arguments to return
fixedbugs/issue4215.go:14:9: error: return with value in function with no return type
fixedbugs/issue4215.go:19:17: error: not enough arguments to return
fixedbugs/issue4215.go:21:9: error: not enough arguments to return
fixedbugs/issue4215.go:27:17: error: not enough arguments to return
fixedbugs/issue4215.go:29:17: error: too many values in return statement
fixedbugs/issue4215.go:31:17: error: not enough arguments to return
fixedbugs/issue4215.go:43:17: error: not enough arguments to return
fixedbugs/issue4215.go:46:17: error: not enough arguments to return
fixedbugs/issue4215.go:48:9: error: too many values in return statement
fixedbugs/issue4215.go:52:9: error: too many values in return statement
fixedbugs/issue41247.go:10:16: error: incompatible type for return value 1
fixedbugs/issue41440.go:13:9: error: too many arguments
fixedbugs/issue6772.go:10:16: error: ‘a’ repeated on left side of :=
fixedbugs/issue6772.go:17:16: error: ‘a’ repeated on left side of :=
fixedbugs/issue6402.go:12:16: error: incompatible type for return value 1
fixedbugs/issue6403.go:13:23: error: reference to undefined identifier ‘syscall.X’
fixedbugs/issue6403.go:14:15: error: reference to undefined name ‘voidpkg’
fixedbugs/issue7746.go:24:20: error: constant multiplication overflow
fixedbugs/issue7760.go:15:7: error: invalid constant type
fixedbugs/issue7760.go:16:7: error: invalid constant type
fixedbugs/issue7760.go:18:7: error: invalid constant type
fixedbugs/issue7760.go:19:7: error: invalid constant type
fixedbugs/issue7760.go:21:11: error: expression is not constant
fixedbugs/issue7760.go:22:11: error: expression is not constant
fixedbugs/issue7760.go:24:7: error: invalid constant type
fixedbugs/issue7760.go:25:7: error: invalid constant type
fixedbugs/issue7129.go:18:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:19:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:20:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:20:17: error: argument 2 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7150.go:12:20: error: index expression is negative
fixedbugs/issue7150.go:13:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:14:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:15:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:16:13: error: some element keys in composite literal are out of range
fixedbugs/issue7675.go:16:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:16:24: error: argument 3 has incompatible type (cannot use type string as type float64)
fixedbugs/issue7675.go:16:9: error: not enough arguments
fixedbugs/issue7675.go:16:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:18:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:18:24: error: argument 3 has incompatible type (cannot use type string as type float64)
fixedbugs/issue7675.go:18:28: error: argument 4 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:18:9: error: too many arguments
fixedbugs/issue7675.go:18:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:19:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:19:9: error: not enough arguments
fixedbugs/issue7675.go:19:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:21:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:21:19: error: argument 3 has incompatible type
fixedbugs/issue7675.go:21:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:23:14: error: floating-point constant truncated to integer
fixedbugs/issue7153.go:11:15: error: reference to undefined name ‘a’
fixedbugs/issue7153.go:11:18: error: incompatible type for element 1 in composite literal
fixedbugs/issue7153.go:11:24: error: incompatible type for element 2 in composite literal
fixedbugs/issue7310.go:12:13: error: left argument must be a slice
fixedbugs/issue7310.go:13:13: error: second argument must be slice or string
fixedbugs/issue7310.go:14:15: error: incompatible types in binary expression
fixedbugs/issue6964.go:10:13: error: invalid type conversion (cannot use type complex128 as type string)
fixedbugs/issue7538a.go:14:9: error: reference to undefined label ‘_’
fixedbugs/issue8311.go:14:9: error: increment or decrement of non-numeric type
fixedbugs/issue8507.go:12:6: error: invalid recursive type ‘T’
fixedbugs/issue9521.go:16:20: error: argument 2 has incompatible type
fixedbugs/issue9521.go:17:20: error: argument 2 has incompatible type (cannot use type float64 as type int)
fixedbugs/issue8385.go:30:19: error: argument 1 has incompatible type (type has no methods)
fixedbugs/issue8385.go:30:14: error: not enough arguments
fixedbugs/issue8385.go:35:9: error: not enough arguments
fixedbugs/issue8385.go:36:9: error: not enough arguments
fixedbugs/issue8385.go:37:10: error: not enough arguments
fixedbugs/issue8385.go:38:10: error: not enough arguments
fixedbugs/issue8385.go:39:10: error: not enough arguments
fixedbugs/issue8385.go:40:10: error: not enough arguments
fixedbugs/issue8385.go:41:13: error: not enough arguments
fixedbugs/issue8438.go:13:23: error: incompatible type for element 1 in composite literal
fixedbugs/issue8438.go:14:22: error: incompatible type for element 1 in composite literal
fixedbugs/issue8438.go:15:23: error: incompatible type for element 1 in composite literal
fixedbugs/issue8440.go:10:9: error: reference to undefined name ‘n’
Change-Id: I5707aec7d3c9178c4f4d794d4827fc907b52efb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/278032
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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fixedbugs/issue20602.go:13:9: error: argument must have complex type
fixedbugs/issue20602.go:14:9: error: argument must have complex type
fixedbugs/issue19323.go:12:12: error: attempt to slice object that is not array, slice, or string
fixedbugs/issue19323.go:18:13: error: attempt to slice object that is not array, slice, or string
fixedbugs/issue20749.go:12:11: error: array index out of bounds
fixedbugs/issue20749.go:15:11: error: array index out of bounds
fixedbugs/issue20415.go:14:5: error: redefinition of ‘f’
fixedbugs/issue20415.go:12:5: note: previous definition of ‘f’ was here
fixedbugs/issue20415.go:25:5: error: redefinition of ‘g’
fixedbugs/issue20415.go:20:5: note: previous definition of ‘g’ was here
fixedbugs/issue20415.go:33:5: error: redefinition of ‘h’
fixedbugs/issue20415.go:31:5: note: previous definition of ‘h’ was here
fixedbugs/issue19977.go:12:21: error: reference to undefined name ‘a’
fixedbugs/issue20812.go:10:13: error: invalid type conversion (cannot use type string as type int)
fixedbugs/issue20812.go:11:13: error: invalid type conversion (cannot use type int as type bool)
fixedbugs/issue20812.go:12:13: error: invalid type conversion (cannot use type string as type bool)
fixedbugs/issue20812.go:13:13: error: invalid type conversion (cannot use type bool as type int)
fixedbugs/issue20812.go:14:13: error: invalid type conversion (cannot use type bool as type string)
fixedbugs/issue21256.go:9:5: error: redefinition of ‘main’
fixedbugs/issue20813.go:10:11: error: invalid left hand side of assignment
fixedbugs/issue20185.go:22:16: error: ‘t’ declared but not used
fixedbugs/issue20185.go:13:9: error: cannot type switch on non-interface value
fixedbugs/issue20185.go:22:9: error: cannot type switch on non-interface value
fixedbugs/issue20227.go:11:11: error: division by zero
fixedbugs/issue20227.go:12:12: error: division by zero
fixedbugs/issue20227.go:13:12: error: division by zero
fixedbugs/issue20227.go:15:11: error: division by zero
fixedbugs/issue20227.go:16:12: error: division by zero
fixedbugs/issue19880.go:14:13: error: invalid use of type
fixedbugs/issue23093.go:9:5: error: initialization expression for ‘f’ depends upon itself
fixedbugs/issue21979.go:29:13: error: integer constant overflow
fixedbugs/issue21979.go:39:13: error: complex constant truncated to floating-point
fixedbugs/issue21979.go:10:13: error: invalid type conversion (cannot use type string as type bool)
fixedbugs/issue21979.go:11:13: error: invalid type conversion (cannot use type int as type bool)
fixedbugs/issue21979.go:12:13: error: invalid type conversion (cannot use type float64 as type bool)
fixedbugs/issue21979.go:13:13: error: invalid type conversion (cannot use type complex128 as type bool)
fixedbugs/issue21979.go:15:13: error: invalid type conversion (cannot use type bool as type string)
fixedbugs/issue21979.go:17:13: error: invalid type conversion (cannot use type float64 as type string)
fixedbugs/issue21979.go:18:13: error: invalid type conversion (cannot use type complex128 as type string)
fixedbugs/issue21979.go:20:13: error: invalid type conversion (cannot use type string as type int)
fixedbugs/issue21979.go:21:13: error: invalid type conversion (cannot use type bool as type int)
fixedbugs/issue21979.go:27:13: error: invalid type conversion (cannot use type string as type uint)
fixedbugs/issue21979.go:28:13: error: invalid type conversion (cannot use type bool as type uint)
fixedbugs/issue21979.go:34:13: error: invalid type conversion (cannot use type string as type float64)
fixedbugs/issue21979.go:35:13: error: invalid type conversion (cannot use type bool as type float64)
fixedbugs/issue21979.go:41:13: error: invalid type conversion (cannot use type string as type complex128)
fixedbugs/issue21979.go:42:13: error: invalid type conversion (cannot use type bool as type complex128)
fixedbugs/issue21988.go:11:11: error: reference to undefined name ‘Wrong’
fixedbugs/issue22063.go:11:11: error: reference to undefined name ‘Wrong’
fixedbugs/issue22904.go:12:6: error: invalid recursive type ‘a’
fixedbugs/issue22904.go:13:6: error: invalid recursive type ‘b’
fixedbugs/issue22921.go:11:16: error: reference to undefined identifier ‘bytes.nonexist’
fixedbugs/issue22921.go:13:19: error: reference to undefined identifier ‘bytes.nonexist’
fixedbugs/issue22921.go:13:19: error: expected signature or type name
fixedbugs/issue22921.go:17:15: error: reference to undefined identifier ‘bytes.buffer’
fixedbugs/issue23823.go:15:9: error: invalid recursive interface
fixedbugs/issue23823.go:10:9: error: invalid recursive interface
fixedbugs/issue23732.go:24:13: error: too few expressions for struct
fixedbugs/issue23732.go:34:17: error: too many expressions for struct
fixedbugs/issue23732.go:37:13: error: too few expressions for struct
fixedbugs/issue23732.go:40:17: error: too many expressions for struct
fixedbugs/issue22794.go:16:14: error: reference to undefined field or method ‘floats’
fixedbugs/issue22794.go:18:19: error: unknown field ‘floats’ in ‘it’
fixedbugs/issue22794.go:19:17: error: unknown field ‘InneR’ in ‘it’
fixedbugs/issue22794.go:18:9: error: ‘i2’ declared but not used
fixedbugs/issue22822.go:15:17: error: expected function
fixedbugs/issue25727.go:12:10: error: reference to unexported field or method ‘doneChan’
fixedbugs/issue25727.go:13:10: error: reference to undefined field or method ‘DoneChan’
fixedbugs/issue25727.go:14:21: error: unknown field ‘tlsConfig’ in ‘http.Server’
fixedbugs/issue25727.go:15:21: error: unknown field ‘DoneChan’ in ‘http.Server’
fixedbugs/issue25727.go:21:14: error: unknown field ‘bAr’ in ‘foo’
Change-Id: I32ce0b7d80017b2367b8fb479a881632240d4161
Reviewed-on: https://go-review.googlesource.com/c/go/+/277455
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
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fixedbugs/issue14136.go:17:16: error: unknown field ‘X’ in ‘T’
fixedbugs/issue14136.go:18:13: error: incompatible type in initialization (cannot use type int as type string)
fixedbugs/issue14520.go:9:37: error: import path contains control character
fixedbugs/issue14520.go:14:2: error: expected ‘)’
fixedbugs/issue14520.go:14:3: error: expected declaration
fixedbugs/issue14652.go:9:7: error: use of undefined type ‘any’
fixedbugs/issue14729.go:13:17: error: embedded type may not be a pointer
fixedbugs/issue15514.dir/c.go:10: error: incompatible type in initialization
fixedbugs/issue15898.go:11:9: error: duplicate type in switch
fixedbugs/issue15898.go:16:9: error: duplicate type in switch
fixedbugs/issue16439.go:10:21: error: index expression is negative
fixedbugs/issue16439.go:13:21: error: index expression is negative
fixedbugs/issue16439.go:16:21: error: index expression is not integer constant
fixedbugs/issue16439.go:18:22: error: index expression is not integer constant
fixedbugs/issue17328.go:11:20: error: expected ‘{’
fixedbugs/issue17328.go:11:20: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue17328.go:13:1: error: expected declaration
fixedbugs/issue17588.go:14:15: error: expected type
fixedbugs/issue17631.go:20:17: error: unknown field ‘updates’ in ‘unnamed struct’
fixedbugs/issue17645.go:15:13: error: incompatible type in initialization
fixedbugs/issue17758.go:13:1: error: redefinition of ‘foo’
fixedbugs/issue17758.go:9:1: note: previous definition of ‘foo’ was here
fixedbugs/issue18092.go:13:19: error: expected colon
fixedbugs/issue18231.go:17:12: error: may only omit types within composite literals of slice, array, or map type
fixedbugs/issue18393.go:24:38: error: expected type
fixedbugs/issue18419.dir/test.go:12: error: reference to unexported field or method 'member'
fixedbugs/issue18655.go:14:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:15:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:16:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:17:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:18:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:20:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:21:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:22:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18915.go:13:20: error: expected ‘;’ after statement in if expression
fixedbugs/issue18915.go:16:21: error: parse error in for statement
fixedbugs/issue18915.go:19:24: error: expected ‘;’ after statement in switch expression
fixedbugs/issue18915.go:13:12: error: ‘a’ declared but not used
fixedbugs/issue18915.go:16:13: error: ‘b’ declared but not used
fixedbugs/issue18915.go:19:16: error: ‘c’ declared but not used
fixedbugs/issue19012.go:16:17: error: return with value in function with no return type
fixedbugs/issue19012.go:18:9: error: return with value in function with no return type
fixedbugs/issue19012.go:22:16: error: argument 2 has incompatible type (cannot use type bool as type uint)
fixedbugs/issue19012.go:22:9: error: too many arguments
fixedbugs/issue19012.go:22:16: error: incompatible types in binary expression
fixedbugs/issue19012.go:24:9: error: too many arguments
fixedbugs/issue19056.go:9:9: error: expected operand
fixedbugs/issue19056.go:9:9: error: expected ‘;’ or newline after top level declaration
fixedbugs/issue19482.go:25:15: error: expected struct field name
fixedbugs/issue19482.go:27:15: error: expected struct field name
fixedbugs/issue19482.go:31:19: error: expected struct field name
fixedbugs/issue19482.go:33:15: error: expected struct field name
fixedbugs/issue19667.go:13:1: error: expected operand
fixedbugs/issue19667.go:13:1: error: missing ‘)’
fixedbugs/issue19667.go:13:105: error: expected ‘;’ after statement in if expression
fixedbugs/issue19667.go:13:105: error: expected ‘{’
fixedbugs/issue19667.go:12:19: error: reference to undefined name ‘http’
Change-Id: Ia9c75b9c78671f354f0a0623dbc075157ef8f181
Reviewed-on: https://go-review.googlesource.com/c/go/+/277433
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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Since CL 270057, there're many attempts to fix the expand_calls pass
with interface{}-typed. But all of them did not fix the root cause. The
main issue is during SSA conversion in gc/ssa.go, for empty interface
case, we make its type as n.Type, instead of BytePtr.
To fix these, we can just use BytePtr for now, since when itab fields
are treated as scalar.
No significal changes on compiler speed, size.
cmd/compile/internal/ssa
expandCalls.func6 9488 -> 9232 (-2.70%)
file before after Δ %
cmd/compile/internal/ssa.s 3992893 3992637 -256 -0.006%
total 20500447 20500191 -256 -0.001%
Fixes #43112
Updates #42784
Updates #42727
Updates #42568
Change-Id: I0b15d9434e0be5448453e61f98ef9c2d6cd93792
Reviewed-on: https://go-review.googlesource.com/c/go/+/276952
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
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The Go spec requires that select case clauses be evaluated in order,
which is stricter than normal ordering semantics. cmd/compile handled
this correctly for send clauses, but was not correctly handling
receive clauses that involved bare variable references.
Discovered with @cuonglm.
Fixes #43111.
Change-Id: Iec93b6514dd771875b084ba49c15d7f4531b4a6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/277132
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
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fixedbugs/bug13343.go:10:12: error: initialization expressions for ‘b’ and ‘c’ depend upon each other
fixedbugs/bug13343.go:11:9: note: ‘c’ defined here
fixedbugs/bug13343.go:11:9: error: initialization expression for ‘c’ depends upon itself
fixedbugs/bug13343.go:11:9: error: initialization expressions for ‘c’ and ‘b’ depend upon each other
fixedbugs/bug13343.go:10:12: note: ‘b’ defined here
fixedbugs/issue10700.dir/test.go:24:10: error: reference to method ‘Do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:25:10: error: reference to method ‘do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:27:10: error: reference to method ‘Dont’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:28:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:31:10: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:33:13: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:34:10: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:35:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:37:10: error: reference to method ‘Do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:38:10: error: reference to method ‘do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:40:13: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:41:10: error: reference to method ‘Dont’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:42:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:43:10: error: reference to method ‘secret’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:44:13: error: reference to unexported field or method ‘secret’
fixedbugs/issue10975.go:13:9: error: interface contains embedded non-interface
fixedbugs/issue11326.go:26:17: error: floating-point constant overflow
fixedbugs/issue11326.go:27:17: error: floating-point constant overflow
fixedbugs/issue11326.go:28:17: error: floating-point constant overflow
fixedbugs/issue11361.go:9:11: error: import file ‘fmt’ not found
fixedbugs/issue11361.go:11:11: error: reference to undefined name ‘fmt’
fixedbugs/issue11371.go:12:15: error: floating-point constant truncated to integer
fixedbugs/issue11371.go:13:15: error: integer constant overflow
fixedbugs/issue11371.go:17:15: error: floating-point constant truncated to integer
fixedbugs/issue11590.go:9:17: error: integer constant overflow
fixedbugs/issue11590.go:9:17: error: integer constant overflow
fixedbugs/issue11590.go:10:22: error: complex real part overflow
fixedbugs/issue11590.go:10:22: error: complex real part overflow
fixedbugs/issue11590.go:11:23: error: complex real part overflow
fixedbugs/issue11590.go:11:23: error: complex real part overflow
fixedbugs/issue11590.go:9:19: error: integer constant overflow
fixedbugs/issue11590.go:10:24: error: complex real part overflow
fixedbugs/issue11590.go:11:25: error: complex real part overflow
fixedbugs/issue11610.go:11:7: error: import path is empty
fixedbugs/issue11610.go:12:4: error: invalid character 0x3f in input file
fixedbugs/issue11610.go:14:1: error: expected identifier
fixedbugs/issue11610.go:14:1: error: expected type
fixedbugs/issue11614.go:14:9: error: interface contains embedded non-interface
fixedbugs/issue13248.go:13:1: error: expected operand
fixedbugs/issue13248.go:13:1: error: missing ‘)’
fixedbugs/issue13248.go:12:5: error: reference to undefined name ‘foo’
fixedbugs/issue13266.go:10:8: error: package name must be an identifier
fixedbugs/issue13266.go:10:8: error: expected ‘;’ or newline after package clause
fixedbugs/issue13266.go:10:8: error: expected declaration
fixedbugs/issue13273.go:50:18: error: expected ‘chan’
fixedbugs/issue13273.go:53:24: error: expected ‘chan’
fixedbugs/issue13274.go:11:58: error: expected ‘}’
fixedbugs/issue13365.go:14:19: error: index expression is negative
fixedbugs/issue13365.go:15:21: error: index expression is negative
fixedbugs/issue13365.go:16:22: error: index expression is negative
fixedbugs/issue13365.go:19:13: error: some element keys in composite literal are out of range
fixedbugs/issue13365.go:22:19: error: incompatible type for element 1 in composite literal
fixedbugs/issue13365.go:23:21: error: incompatible type for element 1 in composite literal
fixedbugs/issue13365.go:24:22: error: incompatible type for element 1 in composite literal
fixedbugs/issue13415.go:14:5: error: redefinition of ‘x’
fixedbugs/issue13415.go:14:5: note: previous definition of ‘x’ was here
fixedbugs/issue13415.go:14:5: error: ‘x’ declared but not used
fixedbugs/issue13471.go:12:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:13:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:14:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:15:24: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:16:23: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:18:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:19:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:20:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:21:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:22:24: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:24:24: error: floating-point constant truncated to integer
fixedbugs/issue13821b.go:18:12: error: incompatible types in binary expression
fixedbugs/issue13821b.go:19:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:20:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:21:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:22:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:24:12: error: incompatible types in binary expression
fixedbugs/issue14006.go:24:18: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:30:18: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:37:22: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:43:22: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:59:17: note: previous definition of ‘labelname’ was here
fixedbugs/issue14006.go:64:17: error: label ‘labelname’ already defined
fixedbugs/issue14006.go:24:17: error: value computed is not used
fixedbugs/issue14006.go:30:17: error: value computed is not used
fixedbugs/issue14006.go:37:20: error: value computed is not used
fixedbugs/issue14006.go:43:20: error: value computed is not used
fixedbugs/issue14006.go:59:17: error: label ‘labelname’ defined and not used
fixedbugs/issue14010.go:13:14: error: invalid left hand side of assignment
fixedbugs/issue14010.go:14:14: error: invalid left hand side of assignment
fixedbugs/issue14010.go:14:9: error: invalid use of type
fixedbugs/issue14321.go:30:10: error: method ‘F’ is ambiguous in type ‘C’
fixedbugs/issue14321.go:31:10: error: ‘G’ is ambiguous via ‘A’ and ‘B’
fixedbugs/issue14321.go:33:10: error: type ‘C’ has no method ‘I’
fixedbugs/issue8183.go:12:14: error: integer constant overflow
fixedbugs/issue9036.go:21:12: error: invalid prefix for floating constant
fixedbugs/issue9036.go:22:12: error: invalid prefix for floating constant
fixedbugs/issue9076.go:14:5: error: incompatible type in initialization (cannot use type uintptr as type int32)
fixedbugs/issue9076.go:15:5: error: incompatible type in initialization (cannot use type uintptr as type int32)
For issue9083.go avoid an error about a variable that is set but not used.
fixedbugs/issue9370.go:105:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:106:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:107:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:108:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:109:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:110:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:112:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:113:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:114:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:115:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:116:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:117:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:119:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:119:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:36:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:39:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:43:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:46:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:50:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:53:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:56:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:57:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:58:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:59:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:60:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:61:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:65:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:68:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:70:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:71:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:72:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:73:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:74:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:75:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:77:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:78:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:79:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:80:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:81:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:82:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:84:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:85:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:86:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:87:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:88:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:89:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:91:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:92:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:93:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:94:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:95:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:96:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:98:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:99:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:100:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:101:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:102:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:103:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:121:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:122:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:123:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:124:15: error: incompatible types in binary expression
Change-Id: I4089de4919112b08f5f2bbec20f84fcc7dbe3955
Reviewed-on: https://go-review.googlesource.com/c/go/+/276832
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
|
|
It just makes the compiler crash. Oops.
Fixes #43099
Change-Id: Id996c14799c1a5d0063ecae3b8770568161c2440
Reviewed-on: https://go-review.googlesource.com/c/go/+/276652
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
|
|
The gofrontend code would in some circumstances incorrectly generate a
type descriptor for an alias type, causing the type to fail to be
equal to the unaliased type.
Change-Id: I47d33b0bfde3c72a9a186049539732bdd5a6a96e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275632
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
|
|
An address of offset(SP) may point to the callee args area, and
may be used to move things into/out of the args/results. If an
address like that is spilled and picked up by the GC, it may hold
an arg/result live in the callee, which may not actually be live
(e.g. a result not initialized at function entry). Make sure
they are rematerializeable, so they are always short-lived and
never picked up by the GC.
This CL changes 386, PPC64, and Wasm. On AMD64 we already have
the rule (line 2159). On other architectures, we already have
similar rules like
(OffPtr [off] ptr:(SP)) => (MOVDaddr [int32(off)] ptr)
to avoid this problem. (Probably me in the past had run into
this...)
Fixes #42944.
Change-Id: Id2ec73ac08f8df1829a9a7ceb8f749d67fe86d1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275174
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
|
|
fixedbugs/bug487.go:17:17: error: function result count mismatch
fixedbugs/bug487.go:18:16: error: function result count mismatch
fixedbugs/issue6977.go:37:26: error: duplicate method ‘m’
fixedbugs/issue6977.go:38:21: error: duplicate method ‘m’
fixedbugs/issue6977.go:39:26: error: duplicate method ‘m’
fixedbugs/issue6977.go:40:21: error: duplicate method ‘m’
Change-Id: Ie3c8a4650cd8f4c239bdceac25dc188a6a50ca34
Reviewed-on: https://go-review.googlesource.com/c/go/+/275178
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
|
|
assign.go:59:28: error: ‘x’ repeated on left side of :=
assign.go:65:20: error: ‘a’ repeated on left side of :=
method2.go:36:11: error: reference to method ‘val’ in type that is pointer to interface, not interface
method2.go:37:11: error: reference to method ‘val’ in type that is pointer to interface, not interface
Change-Id: I8f385c75a82fae4eacf4618df8f9f65932826494
Reviewed-on: https://go-review.googlesource.com/c/go/+/274447
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
|
|
Now that filepath.WalkDir is available, it is more efficient
and should be used in place of filepath.Walk.
Update the tree to reflect best practices.
As usual, the code compiled with Go 1.4 during bootstrap is excluded.
(In this CL, that's only cmd/dist.)
For #42027.
Change-Id: Ib0f7b1e43e50b789052f9835a63ced701d8c411c
Reviewed-on: https://go-review.googlesource.com/c/go/+/267719
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
|
|
The gofrontend code doesn't distinguish semicolon and newline,
and it doesn't have special treatment for EOF.
syntax/semi6.go:9:47: error: unexpected semicolon or newline in type declaration
syntax/semi6.go:11:62: error: unexpected semicolon or newline in type declaration
Change-Id: I9996b59a4fc78ad1935e779f354ddf75c0fb44e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/274692
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
|
|
These replacement rules assume that TST and TEQ set V. But TST and
TEQ do not set V. This is a problem because instructions like LT are
actually checking for N!=V. But with TST and TEQ not setting V, LT
doesn't do anything meaningful. It's possible to construct trivial
miscompilations from this, such as:
package main
var x = [4]int32{-0x7fffffff, 0x7fffffff, 2, 4}
func main() {
if x[0] > x[1] {
panic("fail 1")
}
if x[2]&x[3] < 0 {
panic("fail 2") // Fails here
}
}
That first comparison sets V, via the CMP that subtracts the values
causing the overflow. Then the second comparison operation thinks that
it uses the result of TST, when it actually uses the V from CMP.
Before this fix:
TST R0, R1
BLT loc_6C164
After this fix:
TST R0, R1
BMI loc_6C164
The BMI instruction checks the N flag, which TST sets. This commit
fixes the issue by using [LG][TE]noov instead of vanilla [LG][TE], and
also adds a test case for the direct issue.
Fixes #42876.
Change-Id: I13c62c88d18574247ad002b671b38d2d0b0fc6fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/274026
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
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This matches the error messages after CL 273890.
syntax/semi4.go:11:9: error: unexpected semicolon or newline, expecting ‘{’ after for clause
syntax/semi4.go:10:13: error: reference to undefined name ‘x’
syntax/semi4.go:12:17: error: reference to undefined name ‘z’
Change-Id: Ic88ff6e27d50bf70f5b2114383b84c42c0682f39
Reviewed-on: https://go-review.googlesource.com/c/go/+/273891
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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shift1.go:76:16: error: shift of non-integer operand
shift1.go:77:16: error: shift of non-integer operand
Change-Id: I48584c0b01f9f6912a93b5f9bba55b5803fbeced
Reviewed-on: https://go-review.googlesource.com/c/go/+/273888
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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As of https://golang.org/cl/273886:
fixedbugs/bug340.go:15:18: error: reference to method ‘x’ in interface with no methods
For golang/go#10700
Change-Id: Id29eb0e34bbb524117614229c4c27cfd17dae286
Reviewed-on: https://go-review.googlesource.com/c/go/+/273887
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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