24 lines · cpp
1// RUN: %clang_cl_asan %Od %s %Fe%t2// RUN: not %run %t 2>&1 | FileCheck %s3 4#include <malloc.h>5 6int main() {7 char *buffer = (char*)realloc(0, 32),8 *stale = buffer;9 buffer = (char*)realloc(buffer, 64);10 // The 'stale' may now point to a free'd memory.11 stale[0] = 42;12 // CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]]13 // CHECK: WRITE of size 1 at [[ADDR]] thread T014 // CHECK-NEXT: {{#0 .* main .*use_after_realloc.cpp}}:[[@LINE-3]]15 // CHECK: [[ADDR]] is located 0 bytes inside of 32-byte region16 // CHECK: freed by thread T0 here:17 // CHECK-NEXT: {{#0 .* realloc }}18 // CHECK: {{ #[1-3] .* main .*use_after_realloc.cpp}}:[[@LINE-9]]19 // CHECK: previously allocated by thread T0 here:20 // CHECK-NEXT: {{#0 .* realloc }}21 // CHECK: {{ #[1-3] .* main .*use_after_realloc.cpp}}:[[@LINE-14]]22 free(buffer);23}24