File: unaligned_read_origin.cc

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (16 lines) | stat: -rw-r--r-- 764 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out

#include <sanitizer/msan_interface.h>

int main(int argc, char **argv) {
  int x;
  int *volatile p = &x;
  return __sanitizer_unaligned_load32(p);
  // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
  // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-2]]
  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
  // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cc:}}[[@LINE-7]]
}