1*7c3d14c8STreehugger Robot // RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1 2*7c3d14c8STreehugger Robot // FileCheck %s <%t.out 3*7c3d14c8STreehugger Robot // RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=poison_in_free=0 %run %t >%t.out 2>&1 4*7c3d14c8STreehugger Robot 5*7c3d14c8STreehugger Robot #include <stdio.h> 6*7c3d14c8STreehugger Robot #include <stdlib.h> 7*7c3d14c8STreehugger Robot #include <string.h> 8*7c3d14c8STreehugger Robot main(int argc,char ** argv)9*7c3d14c8STreehugger Robotint main(int argc, char **argv) { 10*7c3d14c8STreehugger Robot char *volatile x = (char*)malloc(50 * sizeof(char)); 11*7c3d14c8STreehugger Robot memset(x, 0, 50); 12*7c3d14c8STreehugger Robot free(x); 13*7c3d14c8STreehugger Robot return x[25]; 14*7c3d14c8STreehugger Robot // CHECK: MemorySanitizer: use-of-uninitialized-value 15*7c3d14c8STreehugger Robot // CHECK: #0 {{.*}} in main{{.*}}poison_in_free.cc:[[@LINE-2]] 16*7c3d14c8STreehugger Robot } 17