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)) f()10void f() { 11 void *buf[10]; 12 int sz = backtrace(buf, sizeof(buf) / sizeof(*buf)); 13 assert(sz > 0); 14 for (int i = 0; i < sz; ++i) 15 if (!buf[i]) 16 exit(1); 17 char **s = backtrace_symbols(buf, sz); 18 assert(s > 0); 19 for (int i = 0; i < sz; ++i) 20 printf("%d\n", (int)strlen(s[i])); 21 } 22 main(void)23int main(void) { 24 f(); 25 return 0; 26 } 27