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| // RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
// RUN: %clangxx_msan -O0 -g -DPOSITIVE %s -o %t && not %run %t 2>&1 | FileCheck %s
#include <assert.h>
#include <iconv.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
int main(void) {
iconv_t cd = iconv_open("ASCII", "ASCII");
assert(cd != (iconv_t)-1);
char inbuf_[100];
strcpy(inbuf_, "sample text");
char outbuf_[100];
#if defined(__NetBSD__)
// Some OSes expect the 2nd argument of iconv(3) to be of type const char **
const char *inbuf = inbuf_;
#else
char *inbuf = inbuf_;
#endif
char *outbuf = outbuf_;
size_t inbytesleft = strlen(inbuf_);
size_t outbytesleft = sizeof(outbuf_);
#ifdef POSITIVE
{
char u;
char *volatile p = &u;
inbuf_[5] = *p;
}
#endif
size_t res;
res = iconv(cd, 0, 0, 0, 0);
assert(res != (size_t)-1);
res = iconv(cd, 0, 0, &outbuf, &outbytesleft);
assert(res != (size_t)-1);
res = iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
// CHECK: MemorySanitizer: use-of-uninitialized-value
// CHECK: #0 {{.*}} in main {{.*}}iconv.cpp:[[@LINE-2]]
assert(res != (size_t)-1);
assert(inbytesleft == 0);
assert(memcmp(inbuf_, outbuf_, strlen(inbuf_)) == 0);
iconv_close(cd);
return 0;
}
|