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// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O0 %s -o %t && not %run %t >%t.out 2>&1 11// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out 12// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O1 %s -o %t && not %run %t >%t.out 2>&1 13// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out 14// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O2 %s -o %t && not %run %t >%t.out 2>&1 15// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out 16// RUN: %clangxx_msan -fsanitize-memory-track-origins -m64 -O3 %s -o %t && not %run %t >%t.out 2>&1 17// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out 18 19#include <stdlib.h> 20int main(int argc, char **argv) { 21 int *volatile p = (int *)malloc(sizeof(int)); 22 *p = 42; 23 free(p); 24 25 if (*p) 26 exit(0); 27 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value 28 // CHECK: {{#0 0x.* in main .*use-after-free.cc:}}[[@LINE-3]] 29 30 // CHECK-ORIGINS: Uninitialized value was created by a heap allocation 31 // CHECK-ORIGINS: {{#0 0x.* in .*free}} 32 // CHECK-ORIGINS: {{#1 0x.* in main .*use-after-free.cc:}}[[@LINE-9]] 33 return 0; 34} 35