25 lines
962 B
C
25 lines
962 B
C
// RUN: %clang_hwasan %s -o %t && not %run %t 2>&1 | FileCheck %s
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#include <stdlib.h>
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#include <stdio.h>
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#include <sanitizer/hwasan_interface.h>
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int main() {
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__hwasan_enable_allocator_tagging();
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char * volatile x = (char*)malloc(40);
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free(x);
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free(x);
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// CHECK: ERROR: HWAddressSanitizer: invalid-free on address {{.*}} at pc {{[0x]+}}[[PC:.*]] on thread T{{[0-9]+}}
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// CHECK: tags: [[PTR_TAG:..]]/[[MEM_TAG:..]] (ptr/mem)
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// CHECK: #0 {{[0x]+}}{{.*}}[[PC]]
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// If we instrument using calls (default on x86), free is not the top frame
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// of the fault. With TCO the free frame can be replaced with the interceptor.
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// CHECK: in {{.*}}free
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// CHECK: freed by thread {{.*}} here:
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// CHECK: previously allocated by thread {{.*}} here:
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// CHECK: Memory tags around the buggy address (one tag corresponds to 16 bytes):
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// CHECK: =>{{.*}}[[MEM_TAG]]
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fprintf(stderr, "DONE\n");
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__hwasan_disable_allocator_tagging();
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// CHECK-NOT: DONE
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}
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