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author | Robert Griesemer <gri@golang.org> | 2017-04-06 20:13:04 -0700 |
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committer | Robert Griesemer <gri@golang.org> | 2017-04-07 03:43:34 +0000 |
commit | 5c850cc207a8916073415bf406d002ef12173e3a (patch) | |
tree | 73c6d297e01e0bc42a1ba22de245da2eed511d0a /src/cmd/compile/internal/types/sizeof_test.go | |
parent | f68f292820a3dc545aba0ee64a372635a64d5040 (diff) | |
download | go-5c850cc207a8916073415bf406d002ef12173e3a.tar.gz go-5c850cc207a8916073415bf406d002ef12173e3a.zip |
cmd/compile: move sizeof tests for types structs to package types
Change-Id: I04cd4dd0ed55b88247a056b429fc496539cd0985
Reviewed-on: https://go-review.googlesource.com/39910
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Diffstat (limited to 'src/cmd/compile/internal/types/sizeof_test.go')
-rw-r--r-- | src/cmd/compile/internal/types/sizeof_test.go | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/types/sizeof_test.go b/src/cmd/compile/internal/types/sizeof_test.go new file mode 100644 index 0000000000..a073f9b1a7 --- /dev/null +++ b/src/cmd/compile/internal/types/sizeof_test.go @@ -0,0 +1,51 @@ +// Copyright 2017 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. + +// +build !nacl + +package types + +import ( + "reflect" + "testing" + "unsafe" +) + +// Assert that the size of important structures do not change unexpectedly. + +func TestSizeof(t *testing.T) { + const _64bit = unsafe.Sizeof(uintptr(0)) == 8 + + var tests = []struct { + val interface{} // type as a value + _32bit uintptr // size on 32bit platforms + _64bit uintptr // size on 64bit platforms + }{ + {Sym{}, 60, 104}, + {Type{}, 52, 88}, + {MapType{}, 20, 40}, + {ForwardType{}, 20, 32}, + {FuncType{}, 28, 48}, + {StructType{}, 12, 24}, + {InterType{}, 4, 8}, + {ChanType{}, 8, 16}, + {ArrayType{}, 12, 16}, + {DDDFieldType{}, 4, 8}, + {FuncArgsType{}, 4, 8}, + {ChanArgsType{}, 4, 8}, + {PtrType{}, 4, 8}, + {SliceType{}, 4, 8}, + } + + for _, tt := range tests { + want := tt._32bit + if _64bit { + want = tt._64bit + } + got := reflect.TypeOf(tt.val).Size() + if want != got { + t.Errorf("unsafe.Sizeof(%T) = %d, want %d", tt.val, got, want) + } + } +} |