File: malloc_context_size.cpp

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (27 lines) | stat: -rw-r--r-- 1,168 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
// RUN: %clangxx_asan -O0 %s -o %t
// RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s
// RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s
// RUN: %env_asan_opts=malloc_context_size=1:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s
// RUN: %env_asan_opts=malloc_context_size=1:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s
// RUN: %env_asan_opts=malloc_context_size=2 not %run %t 2>&1 | FileCheck %s --check-prefix=TWO

int main() {
  char *x = new char[20];
  delete[] x;
  return x[0];

  // CHECK: freed by thread T{{.*}} here:
  // CHECK-NEXT: #0 0x{{.*}} in {{operator delete( )?\[\]|wrap__ZdaPv}}
  // CHECK-NOT: #1 0x{{.*}}

  // CHECK: previously allocated by thread T{{.*}} here:
  // CHECK-NEXT: #0 0x{{.*}} in {{operator new( )?\[\]|wrap__Znam}}
  // CHECK-NOT: #1 0x{{.*}}

  // CHECK: SUMMARY: AddressSanitizer: heap-use-after-free

  // TWO: previously allocated by thread T{{.*}} here:
  // TWO-NEXT: #0 0x{{.*}}
  // TWO-NEXT: #1 0x{{.*}} in main {{.*}}malloc_context_size.cpp
  // TWO: SUMMARY: AddressSanitizer: heap-use-after-free
}