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)) |
10 | void 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 | |
29 | int main(void) { |
30 | f(); |
31 | return 0; |
32 | } |
33 | |