39 lines · cpp
1// RUN: %clangxx_hwasan -DSIZE=16 -O0 %s -o %t && %run %t 2>&1 | FileCheck %s2 3#include <assert.h>4#include <stdlib.h>5#include <sys/mman.h>6#include <sanitizer/hwasan_interface.h>7 8int main() {9 char *alloc = (char *)malloc(4096);10 11 // Simulate short granule tags.12 alloc[15] = 0x00;13 alloc[31] = 0xbb;14 alloc[47] = 0xcc;15 alloc[63] = 0xdd;16 alloc[79] = 0xee;17 alloc[95] = 0xff;18 19 char *p = alloc;20 21 // Write tags to shadow.22 __hwasan_tag_memory(p, 1, 32);23 __hwasan_tag_memory(p + 32, 16, 16);24 __hwasan_tag_memory(p + 48, 0, 32);25 __hwasan_tag_memory(p + 80, 4, 16);26 27 char *q = (char *)__hwasan_tag_pointer(p, 7);28 __hwasan_print_shadow(q + 5, 89 - 5);29 // CHECK: HWASan shadow map for {{.*}}5 .. {{.*}}9 (pointer tag 7)30 // CHECK-NEXT: {{.*}}0: 01(00)31 // CHECK-NEXT: {{.*}}0: 01(bb)32 // CHECK-NEXT: {{.*}}0: 1033 // CHECK-NEXT: {{.*}}0: 0034 // CHECK-NEXT: {{.*}}0: 0035 // CHECK-NEXT: {{.*}}0: 04(ff)36 37 free(alloc);38}39