43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
// RUN: %clangxx_hwasan -DSIZE=16 -O0 %s -o %t && %run %t 2>&1 | FileCheck %s
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// REQUIRES: stable-runtime
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#include <assert.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include <sanitizer/hwasan_interface.h>
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int main() {
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char *alloc = (char *)malloc(4096);
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// Simulate short granule tags.
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alloc[15] = 0x00;
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alloc[31] = 0xbb;
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alloc[47] = 0xcc;
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alloc[63] = 0xdd;
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alloc[79] = 0xee;
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alloc[95] = 0xff;
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// __hwasan_tag_memory expects untagged pointers.
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char *p = (char *)__hwasan_tag_pointer(alloc, 0);
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assert(p);
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// Write tags to shadow.
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__hwasan_tag_memory(p, 1, 32);
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__hwasan_tag_memory(p + 32, 16, 16);
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__hwasan_tag_memory(p + 48, 0, 32);
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__hwasan_tag_memory(p + 80, 4, 16);
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char *q = (char *)__hwasan_tag_pointer(p, 7);
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__hwasan_print_shadow(q + 5, 89 - 5);
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// CHECK: HWASan shadow map for {{.*}}5 .. {{.*}}9 (pointer tag 7)
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// CHECK-NEXT: {{.*}}0: 01(00)
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// CHECK-NEXT: {{.*}}0: 01(bb)
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// CHECK-NEXT: {{.*}}0: 10
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// CHECK-NEXT: {{.*}}0: 00
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// CHECK-NEXT: {{.*}}0: 00
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// CHECK-NEXT: {{.*}}0: 04(ff)
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free(alloc);
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}
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