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author | Cuong Manh Le <cuong.manhle.vn@gmail.com> | 2019-10-30 14:06:54 +0700 |
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committer | Matthew Dempsky <mdempsky@google.com> | 2019-11-04 20:19:15 +0000 |
commit | 26d5f032e99e68252f20d298bec925f2e1a1613e (patch) | |
tree | 6b0a0dc599e50f7013d4b9af837bd1456c01473b /test/initempty.go | |
parent | 210e3677f997fcce48e749437853203358f1b7b4 (diff) | |
download | go-26d5f032e99e68252f20d298bec925f2e1a1613e.tar.gz go-26d5f032e99e68252f20d298bec925f2e1a1613e.zip |
cmd/compile: add test for skipping empty init functions
CL 200958 adds skipping empty init function feature without any tests
for it. A codegen test sounds ideal, but it's unlikely that we can make
one for now, so use a program to manipulate runtime/proc.go:initTask
directly.
Updates #34869
Change-Id: I2683b9a1ace36af6861af02a3a9fb18b3110b282
Reviewed-on: https://go-review.googlesource.com/c/go/+/204217
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Diffstat (limited to 'test/initempty.go')
-rw-r--r-- | test/initempty.go | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/initempty.go b/test/initempty.go new file mode 100644 index 0000000000..60bd9fb35e --- /dev/null +++ b/test/initempty.go @@ -0,0 +1,40 @@ +// run + +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Test that empty init functions are skipped. + +package main + +import _ "unsafe" // for go:linkname + +type initTask struct { + state uintptr + ndeps uintptr + nfns uintptr +} + +//go:linkname main_inittask main..inittask +var main_inittask initTask + +func main() { + if nfns := main_inittask.nfns; nfns != 0 { + println(nfns) + panic("unexpected init funcs") + } +} + +func init() { +} + +func init() { + if false { + } +} + +func init() { + for false { + } +} |