e757cadb07
Once we start instrumenting globals, all addresses including those of string literals that we pass to the operating system will start being tagged. Since we can't rely on the operating system to be able to cope with these addresses, we need to untag them before passing them to the operating system. This change introduces a macro that does so and uses it everywhere it is needed. Differential Revision: https://reviews.llvm.org/D65768 llvm-svn: 367938
28 lines
890 B
C++
28 lines
890 B
C++
// RUN: %clangxx_hwasan -O0 %s -o %t
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t 2>&1 | FileCheck %s
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
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// UNSUPPORTED: android
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// REQUIRES: stable-runtime
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#include <stdio.h>
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#include <stdlib.h>
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#include "../utils.h"
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extern void *aligned_alloc(size_t alignment, size_t size);
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int main() {
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void *p = aligned_alloc(17, 100);
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// CHECK: ERROR: HWAddressSanitizer: invalid alignment requested in aligned_alloc: 17
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// CHECK: {{#0 0x.* in .*}}{{aligned_alloc|memalign}}
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// CHECK: {{#1 0x.* in main .*aligned_alloc-alignment.cpp:}}[[@LINE-3]]
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// CHECK: SUMMARY: HWAddressSanitizer: invalid-aligned-alloc-alignment
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untag_printf("pointer after failed aligned_alloc: %zd\n", (size_t)p);
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// CHECK-NULL: pointer after failed aligned_alloc: 0
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return 0;
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}
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