forked from OSchip/llvm-project
27 lines
684 B
C
27 lines
684 B
C
// RUN: %clang_hwasan -O0 -DNEGATIVE %s -o %t && %run %t 2>&1
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// RUN: %clang_hwasan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
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// REQUIRES: stable-runtime
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#include <stdlib.h>
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#include <assert.h>
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#include <sanitizer/hwasan_interface.h>
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__attribute__((noinline))
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int f(void *caller_frame) {
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int z = 0;
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int *volatile p = &z;
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// Tag of local is never zero.
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assert(__hwasan_tag_pointer(p, 0) != p);
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#ifndef NEGATIVE
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// This will destroy shadow of "z", and the following load will crash.
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__hwasan_handle_longjmp(caller_frame);
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#endif
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return p[0];
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}
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int main() {
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return f(__builtin_frame_address(0));
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// CHECK: READ of size 8 at {{.*}} tags: {{.*}}/00 (ptr/mem)
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}
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