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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
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
// 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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//
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// +build ignore
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package cgotest
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/*
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// This file tests a bug found in the cgo -cdefs tool that incorrectly
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// translated Go pointer arrays generated by the cgo godefs tool back into C
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// pointer arrays.
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//
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// The comments below show how the type is translated from gcc-style C into Go
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// and back into C for both the buggy version and the correct version
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struct cdefsTest {
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// This was already being handled correctly
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// Correct: -> Array [20]int8 -> int8 array[20]
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char array1[20];
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// Buggy: -> Array [20][20]int8 -> [20]int8 array[20]
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// Correct: -> Array [20][20]int8 -> int8 array[20][20]
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char array2[20][20];
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// Buggy: -> Array [20]*int8 -> *int8 array[20]
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// Correct: -> Array [20]*int8 -> int8 *array[20]
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char *array3[20];
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// Buggy: -> Array [20][20]*int8 -> [20]*int8 array[20]
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// Correct: -> Array [20]**int8 -> int8 *array[20][20]
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char *array4[20][20];
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// Buggy: -> Array [20][20]**int8 -> [20]**int8 array[20]
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// Correct: -> Array [20][20]**int8 -> int8 **array[20][20]
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char **array5[20][20];
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};
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// Test that packed structures can be translated to C correctly too.
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// See issue 8477.
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struct packedTest {
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char first;
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int second;
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long long third;
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} __attribute__((packed));
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// Test that conflicting type definitions don't cause problems with cgo.
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// See issue 8477.
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typedef struct timespec {
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double bogus;
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} pid_t;
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*/
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import "C"
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type CdefsTest C.struct_cdefsTest
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type PackedTest C.struct_packedTest
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