1 // RUN: %clang_cl_asan %Od %s %Fe%t 2 // RUN: not %run %t 2>&1 | FileCheck %s 3 4 #include <malloc.h> 5 6 int main() { 7 char *buffer = (char*)malloc(42); 8 free(buffer); 9 buffer[0] = 42; 10 // CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]] 11 // CHECK: WRITE of size 1 at [[ADDR]] thread T0 12 // CHECK-NEXT: {{#0 .* main .*malloc_uaf.cpp}}:[[@LINE-3]] 13 // CHECK: [[ADDR]] is located 0 bytes inside of 42-byte region 14 // CHECK: freed by thread T0 here: 15 // CHECK-NEXT: {{#0 .* free }} 16 // CHECK: {{ #[1-3] .* main .*malloc_uaf.cpp}}:[[@LINE-8]] 17 // CHECK: previously allocated by thread T0 here: 18 // CHECK-NEXT: {{#0 .* malloc }} 19 // CHECK: {{ #[1-3] .* main .*malloc_uaf.cpp}}:[[@LINE-12]] 20 } 21