You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.8 KiB
55 lines
1.8 KiB
4 months ago
|
// RUN: %clangxx_asan %s -pthread -o %t
|
||
|
|
// RUN: %env_asan_opts=detect_stack_use_after_return=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1
|
||
|
|
// RUN: %env_asan_opts=detect_stack_use_after_return=0 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK0
|
||
|
|
// RUN: %clangxx_asan -O3 %s -pthread -o %t
|
||
|
|
// RUN: %env_asan_opts=detect_stack_use_after_return=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1
|
||
|
|
// RUN: %env_asan_opts=detect_stack_use_after_return=0 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK0
|
||
|
|
// REQUIRES: stable-runtime
|
||
|
|
|
||
|
|
#include <assert.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <pthread.h>
|
||
|
|
#include <sanitizer/asan_interface.h>
|
||
|
|
|
||
|
|
static const int kNumThreads = 2;
|
||
|
|
static const int kLeftRedzoneSize = sizeof(void *) * 4;
|
||
|
|
|
||
|
|
void *Thread(void *unused) {
|
||
|
|
void *fake_stack = __asan_get_current_fake_stack();
|
||
|
|
char var[15];
|
||
|
|
if (fake_stack) {
|
||
|
|
fprintf(stderr, "fake stack found: %p; var: %p\n", fake_stack, var);
|
||
|
|
// CHECK1: fake stack found
|
||
|
|
// CHECK1: fake stack found
|
||
|
|
void *beg, *end;
|
||
|
|
void *real_stack =
|
||
|
|
__asan_addr_is_in_fake_stack(fake_stack, &var[0], &beg, &end);
|
||
|
|
assert(real_stack);
|
||
|
|
assert((char*)beg <= (char*)&var[0]);
|
||
|
|
assert((char*)end > (char*)&var[0]);
|
||
|
|
for (int i = -kLeftRedzoneSize; i < 15; i++) {
|
||
|
|
void *beg1, *end1;
|
||
|
|
char *ptr = &var[0] + i;
|
||
|
|
void *real_stack1 =
|
||
|
|
__asan_addr_is_in_fake_stack(fake_stack, ptr, &beg1, &end1);
|
||
|
|
assert(real_stack == real_stack1);
|
||
|
|
assert(beg == beg1);
|
||
|
|
assert(end == end1);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
fprintf(stderr, "no fake stack\n");
|
||
|
|
// CHECK0: no fake stack
|
||
|
|
// CHECK0: no fake stack
|
||
|
|
}
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char **argv) {
|
||
|
|
pthread_t t[kNumThreads];
|
||
|
|
for (int i = 0; i < kNumThreads; i++)
|
||
|
|
pthread_create(&t[i], 0, Thread, 0);
|
||
|
|
for (int i = 0; i < kNumThreads; i++)
|
||
|
|
pthread_join(t[i], 0);
|
||
|
|
return 0;
|
||
|
|
}
|