1 // RUN: %clangxx_msan -O0 -g %s -o %t && %run %t 2 // RUN: %clangxx_msan -O0 -g -DUNINIT %s -o %t && not %run %t 2>&1 | FileCheck %s 3 4 #include <assert.h> 5 #include <stdio.h> 6 #include <stdlib.h> 7 main(void)8int main(void) { 9 unsigned seed; 10 #ifndef UNINIT 11 seed = 42; 12 #endif 13 int v = rand_r(&seed); 14 // CHECK: MemorySanitizer: use-of-uninitialized-value 15 // CHECK: in main{{.*}}rand_r.cc:[[@LINE-2]] 16 if (v) printf(".\n"); 17 return 0; 18 } 19