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55 lines
1.8 KiB
55 lines
1.8 KiB
// RUN: %clangxx_asan %s -pthread -o %t
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// RUN: %env_asan_opts=detect_stack_use_after_return=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1
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// RUN: %env_asan_opts=detect_stack_use_after_return=0 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK0
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// RUN: %clangxx_asan -O3 %s -pthread -o %t
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// RUN: %env_asan_opts=detect_stack_use_after_return=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1
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// RUN: %env_asan_opts=detect_stack_use_after_return=0 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK0
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// REQUIRES: stable-runtime
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#include <assert.h>
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#include <stdio.h>
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#include <pthread.h>
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#include <sanitizer/asan_interface.h>
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static const int kNumThreads = 2;
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static const int kLeftRedzoneSize = sizeof(void *) * 4;
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void *Thread(void *unused) {
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void *fake_stack = __asan_get_current_fake_stack();
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char var[15];
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if (fake_stack) {
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fprintf(stderr, "fake stack found: %p; var: %p\n", fake_stack, var);
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// CHECK1: fake stack found
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// CHECK1: fake stack found
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void *beg, *end;
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void *real_stack =
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__asan_addr_is_in_fake_stack(fake_stack, &var[0], &beg, &end);
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assert(real_stack);
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assert((char*)beg <= (char*)&var[0]);
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assert((char*)end > (char*)&var[0]);
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for (int i = -kLeftRedzoneSize; i < 15; i++) {
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void *beg1, *end1;
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char *ptr = &var[0] + i;
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void *real_stack1 =
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__asan_addr_is_in_fake_stack(fake_stack, ptr, &beg1, &end1);
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assert(real_stack == real_stack1);
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assert(beg == beg1);
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assert(end == end1);
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}
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} else {
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fprintf(stderr, "no fake stack\n");
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// CHECK0: no fake stack
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// CHECK0: no fake stack
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}
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return NULL;
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}
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int main(int argc, char **argv) {
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pthread_t t[kNumThreads];
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for (int i = 0; i < kNumThreads; i++)
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pthread_create(&t[i], 0, Thread, 0);
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for (int i = 0; i < kNumThreads; i++)
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pthread_join(t[i], 0);
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return 0;
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}
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