33 lines
981 B
C++
33 lines
981 B
C++
// 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:
|
|
//
|
|
// The first frame is our wrapper normally but will be malloc in the dynamic
|
|
// config.
|
|
// CHECK: #0 {{.*}} in {{malloc|__asan_wrap_strdup}}
|
|
//
|
|
// The local call to _strdup above may be the second or third frame depending
|
|
// on whether we're using the dynamic config.
|
|
// CHECK: #{{[12]}} {{.*}} in main {{.*}}intercept_strdup.cc:[[@LINE-21]]
|
|
free(ptr);
|
|
}
|