1// RUN: %clangxx_msan -O0 %s -o %t && %run %t
2
3#include <assert.h>
4#include <execinfo.h>
5#include <stdio.h>
6#include <string.h>
7#include <stdlib.h>
8
9__attribute__((noinline))
10void f() {
11 void *buf[10];
12 int sz = backtrace(array: buf, size: sizeof(buf) / sizeof(*buf));
13 assert(sz > 0);
14 for (int i = 0; i < sz; ++i)
15 if (!buf[i]) {
16#if defined(__s390x__)
17 // backtrace() may return a bogus trailing NULL on s390x.
18 if (i == sz - 1)
19 continue;
20#endif
21 exit(status: 1);
22 }
23 char **s = backtrace_symbols(array: buf, size: sz);
24 assert(s != 0);
25 for (int i = 0; i < sz; ++i)
26 printf(format: "%d\n", (int)strlen(s: s[i]));
27}
28
29int main(void) {
30 f();
31 return 0;
32}
33

source code of compiler-rt/test/msan/backtrace.cpp