mirror of
https://github.com/golang/go
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029c760c7b
Also fix the msan_fail test. It was bogus, since it always aborted one way or another. Change-Id: Ic693327d1bddb7bc5c7d859ac047fc93cb9b5b1c Reviewed-on: https://go-review.googlesource.com/16172 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
33 lines
541 B
Go
33 lines
541 B
Go
package main
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/*
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#include <string.h>
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#include <stdint.h>
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#include <stdlib.h>
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void f(int32_t *p, int n) {
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int32_t * volatile q = (int32_t *)malloc(sizeof(int32_t) * n);
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memcpy(p, q, n * sizeof(*p));
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free(q);
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}
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void g(int32_t *p, int n) {
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if (p[4] != 1) {
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// We shouldn't get here; msan should stop us first.
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exit(0);
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}
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}
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*/
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import "C"
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import (
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"unsafe"
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)
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func main() {
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a := make([]int32, 10)
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C.f((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
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a[3] = 1
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C.g((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
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}
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