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: %clang_cl_asan -O0 %s -Fe%t
// RUN: not %run %t 2>&1 | FileCheck %s
#include <stdio.h>
#include <string.h>
#include <malloc.h>
int main() {
char *ptr = _strdup("Hello");
int subscript = 1;
ptr[subscript] = '3';
printf("%s\n", ptr);
fflush(0);
// CHECK: H3llo
subscript = -1;
ptr[subscript] = 42;
// CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
// CHECK: WRITE of size 1 at [[ADDR]] thread T0
// CHECK: {{#0 .* main .*}}intercept_strdup.cc:[[@LINE-3]]
// CHECK: [[ADDR]] is located 1 bytes to the left of 6-byte region
// CHECK: allocated by thread T0 here:
// CHECK: {{#0 .* malloc }}
// CHECK: {{#1 .* _strdup }}
// CHECK: {{#2 .* main .*}}intercept_strdup.cc:[[@LINE-16]]
free(ptr);
}
|
