1 // RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1 2 // RUN: FileCheck %s < %t.out 3 // RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1 4 // RUN: FileCheck %s < %t.out 5 // RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1 6 // RUN: FileCheck %s < %t.out 7 // RUN: %clangxx_msan -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 -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 -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 -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 -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> 20 int 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 deallocation 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
