26 lines · c
1// RUN: %clang_hwasan %s -o %t && not %run %t 2>&1 | FileCheck %s2 3#include <stdlib.h>4#include <stdio.h>5#include <sanitizer/hwasan_interface.h>6 7int main() {8 __hwasan_enable_allocator_tagging();9 char * volatile x = (char*)malloc(40);10 free(x);11 free(x);12 // CHECK: ERROR: HWAddressSanitizer: invalid-free on address {{.*}} at pc {{[0x]+}}[[PC:.*]] on thread T{{[0-9]+}}13 // CHECK: tags: [[PTR_TAG:..]]/[[MEM_TAG:..]] (ptr/mem)14 // CHECK: #0 {{[0x]+}}{{.*}}[[PC]]15 // If we instrument using calls (default on x86), free is not the top frame16 // of the fault. With TCO the free frame can be replaced with the interceptor.17 // CHECK: in {{.*}}free18 // CHECK: freed by thread {{.*}} here:19 // CHECK: previously allocated by thread {{.*}} here:20 // CHECK: Memory tags around the buggy address (one tag corresponds to 16 bytes):21 // CHECK: =>{{.*}}[[MEM_TAG]]22 fprintf(stderr, "DONE\n");23 __hwasan_disable_allocator_tagging();24// CHECK-NOT: DONE25}26