File: origin-store-long.cpp

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (21 lines) | stat: -rw-r--r-- 799 bytes parent folder | download | duplicates (28) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
// Check that 8-byte store updates origin for the full store range.
// 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 -O2 %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() {
  uint64_t *volatile p = new uint64_t;
  uint64_t *volatile q = new uint64_t;
  *p = *q;
  char *z = (char *)p;
  return z[6];
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK:   in main {{.*}}origin-store-long.cpp:[[@LINE-2]]

// CHECK:  Uninitialized value was created by a heap allocation
// CHECK:   in main {{.*}}origin-store-long.cpp:[[@LINE-8]]
}