1// RUN: %clangxx_msan -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1 2// RUN: FileCheck %s < %t.out 3// RUN: %clangxx_msan -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1 4// RUN: FileCheck %s < %t.out 5// RUN: %clangxx_msan -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1 6// RUN: FileCheck %s < %t.out 7// RUN: %clangxx_msan -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1 8// RUN: FileCheck %s < %t.out 9 10#include <stdlib.h> 11int main(int argc, char **argv) { 12 int x; 13 int *volatile p = &x; 14 int z = *p ? 1 : 0; 15 if (z) 16 exit(0); 17 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value 18 // CHECK: {{#0 0x.* in main .*select.cc:}}[[@LINE-3]] 19 20 // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*select.cc:.* main}} 21 return 0; 22} 23