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https://github.com/golang/go
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f7a8adbd51
Instead of including <sys/types.h> to get size_t, instead include the ISO C standard <stddef.h> header, which defines fewer additional types at risk of colliding with the user code. In particular, this prevents collisions between <sys/types.h>'s userspace definitions with the kernel definitions needed by defs_linux.go. Also, -cdefs mode uses #pragma pack, so we can keep misaligned fields. Fixes #8477. LGTM=iant R=golang-codereviews, iant CC=golang-codereviews https://golang.org/cl/120610043
72 lines
3.0 KiB
C
72 lines
3.0 KiB
C
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "runtime.h"
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#include "cdefstest.h"
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void runtime·printf(int8*, ...);
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// From cdefstest.go.
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typedef struct CdefsOrig CdefsOrig;
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struct CdefsOrig {
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int8 array1[20];
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int8 array2[20][20];
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int8 *array3[20];
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int8 *array4[20][20];
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int8 **array5[20][20];
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};
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typedef struct PackedOrig PackedOrig;
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#pragma pack on
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struct PackedOrig {
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int8 first;
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int32 second;
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int64 third;
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};
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#pragma pack off
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void
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main·test(int32 ret)
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{
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CdefsOrig o;
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CdefsTest t;
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PackedOrig po;
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PackedTest pt;
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ret = 0;
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if(sizeof(t.array1) != sizeof(o.array1) || offsetof(CdefsTest, array1[0]) != offsetof(CdefsOrig, array1[0])) {
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runtime·printf("array1: size, offset = %d, %d, want %d, %d\n", sizeof(t.array1), offsetof(CdefsTest, array1[0]), sizeof(o.array1), offsetof(CdefsOrig, array1[0]));
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ret = 1;
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}
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if(sizeof(t.array2) != sizeof(o.array2) || offsetof(CdefsTest, array2[0][0]) != offsetof(CdefsOrig, array2[0][0])) {
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runtime·printf("array2: size, offset = %d, %d, want %d, %d\n", sizeof(t.array2), offsetof(CdefsTest, array2[0][0]), sizeof(o.array2), offsetof(CdefsOrig, array2[0][0]));
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ret = 1;
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}
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if(sizeof(t.array3) != sizeof(o.array3) || offsetof(CdefsTest, array3[0]) != offsetof(CdefsOrig, array3[0])) {
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runtime·printf("array3: size, offset = %d, %d, want %d, %d\n", sizeof(t.array3), offsetof(CdefsTest, array3[0]), sizeof(o.array3), offsetof(CdefsOrig, array3[0]));
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ret = 1;
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}
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if(sizeof(t.array4) != sizeof(o.array4) || offsetof(CdefsTest, array4[0][0]) != offsetof(CdefsOrig, array4[0][0])) {
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runtime·printf("array4: size, offset = %d, %d, want %d, %d\n", sizeof(t.array4), offsetof(CdefsTest, array4[0][0]), sizeof(o.array4), offsetof(CdefsOrig, array4[0][0]));
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ret = 1;
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}
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if(sizeof(t.array5) != sizeof(o.array5) || offsetof(CdefsTest, array5[0][0]) != offsetof(CdefsOrig, array5[0][0])) {
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runtime·printf("array5: size, offset = %d, %d, want %d, %d\n", sizeof(t.array5), offsetof(CdefsTest, array5[0][0]), sizeof(o.array5), offsetof(CdefsOrig, array5[0][0]));
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ret = 1;
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}
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if(sizeof(pt.first) != sizeof(po.first) || offsetof(PackedTest, first) != offsetof(PackedOrig, first)) {
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runtime·printf("first: size, offset = %d, %d, want %d, %d\n", sizeof(pt.first), offsetof(PackedTest, first), sizeof(po.first), offsetof(PackedOrig, first));
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ret = 1;
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}
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if(sizeof(pt.second) != sizeof(po.second) || offsetof(PackedTest, second) != offsetof(PackedOrig, second)) {
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runtime·printf("second: size, offset = %d, %d, want %d, %d\n", sizeof(pt.second), offsetof(PackedTest, second), sizeof(po.second), offsetof(PackedOrig, second));
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ret = 1;
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}
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if(sizeof(pt.third) != sizeof(po.third) || offsetof(PackedTest, third) != offsetof(PackedOrig, third)) {
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runtime·printf("third: size, offset = %d, %d, want %d, %d\n", sizeof(pt.third), offsetof(PackedTest, third), sizeof(po.third), offsetof(PackedOrig, third));
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ret = 1;
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}
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FLUSH(&ret); // flush return value
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}
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