1 // RUN: %clang_hwasan %s -o %t && not %run %t 2>&1 | FileCheck %s 2 3 // REQUIRES: stable-runtime 4 5 #include <stdlib.h> 6 #include <stdio.h> 7 #include <sanitizer/hwasan_interface.h> 8 main()9int main() { 10 __hwasan_enable_allocator_tagging(); 11 char * volatile x = (char*)malloc(40); 12 free(x); 13 free(x); 14 // CHECK: ERROR: HWAddressSanitizer: invalid-free on address 15 // CHECK: tags: [[PTR_TAG:..]]/[[MEM_TAG:..]] (ptr/mem) 16 // CHECK: freed by thread {{.*}} here: 17 // CHECK: previously allocated here: 18 // CHECK: Memory tags around the buggy address (one tag corresponds to 16 bytes): 19 // CHECK: =>{{.*}}[[MEM_TAG]] 20 fprintf(stderr, "DONE\n"); 21 __hwasan_disable_allocator_tagging(); 22 // CHECK-NOT: DONE 23 } 24