43 lines · cpp
1// RUN: %clangxx_msan %s -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-UAD2// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && not %t 2>&1 | FileCheck %s --check-prefix=CHECK-UAD3// RUN: %clangxx_msan %s -O2 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-UAD4// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -fsanitize-memory-track-origins -o %t && not %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-UAD,CHECK-ORIGINS5// RUN: %clangxx_msan %s -fno-sanitize-memory-use-after-dtor -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-UAD-OFF6 7#include <sanitizer/msan_interface.h>8#include <assert.h>9#include <stdio.h>10#include <new>11 12struct Simple {13 int x_;14 Simple() {15 x_ = 5;16 }17 ~Simple() {18 x_ += 1;19 }20};21 22int main() {23 unsigned long buf[1];24 assert(sizeof(Simple) <= sizeof(buf));25 26 Simple *s = new(&buf) Simple();27 s->~Simple();28 29 fprintf(stderr, "\n"); // Need output to parse for CHECK-UAD-OFF case30 return s->x_;31 32 // CHECK-UAD: WARNING: MemorySanitizer: use-of-uninitialized-value33 // CHECK-UAD: {{#0 0x.* in main.*use-after-dtor.cpp:}}[[@LINE-3]]34 35 // CHECK-ORIGINS: Member fields were destroyed36 // CHECK-ORIGINS: {{#0 0x.* in __sanitizer_dtor_callback}}37 // CHECK-ORIGINS: {{#1 0x.* in .*~Simple.*cpp:}}[[@LINE-24]]:38 // CHECK-ORIGINS: {{#2 0x.* in .*~Simple.*cpp:}}[[@LINE-19]]:39 40 // CHECK-UAD: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*main}}41 // CHECK-UAD-OFF-NOT: SUMMARY: MemorySanitizer: use-of-uninitialized-value42}43