| // RUN: %clang_cl_asan -O0 %s -Fe%t |
| // RUN: not %run %t 2>&1 | FileCheck %s |
| |
| #include <windows.h> |
| |
| typedef struct _S { |
| unsigned int bf1:1; |
| unsigned int bf2:2; |
| unsigned int bf3:3; |
| unsigned int bf4:4; |
| } S; |
| |
| void make_access(S *s) { |
| s->bf2 = 2; |
| // CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]] |
| // CHECK: READ of size {{[124]}} at [[ADDR]] |
| // CHECK: {{#0 .* make_access.*bitfield_uaf.cc}}:[[@LINE-3]] |
| // CHECK: {{#1 .* main}} |
| } |
| |
| int main(void) { |
| S *s = (S*)malloc(sizeof(S)); |
| free(s); |
| // CHECK: [[ADDR]] is located 0 bytes inside of 4-byte region |
| // CHECK-LABEL: freed by thread T0 here: |
| // CHECK: {{#0 .* free }} |
| // CHECK: {{#1 .* main .*bitfield_uaf.cc}}:[[@LINE-4]] |
| // CHECK-LABEL: previously allocated by thread T0 here: |
| // CHECK: {{#0 .* malloc }} |
| // CHECK: {{#1 .* main .*bitfield_uaf.cc}}:[[@LINE-8]] |
| make_access(s); |
| return 0; |
| } |
| |
