compiler-rt/test/msan/rand_r.cpp

   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
   8 int 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.cpp:[[@LINE-2]]
  16   if (v) printf(".\n");
  17   return 0;
  18 }