forked from OSchip/llvm-project
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
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#include <sanitizer/asan_interface.h>
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#include <stdio.h>
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#include <stdlib.h>
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// FIXME: Doesn't work with DLLs
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// XFAIL: win32-dynamic-asan
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// If we use %p with MSVC, it comes out all upper case. Use %08x to get
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// lowercase hex.
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#ifdef _MSC_VER
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# ifdef _WIN64
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# define PTR_FMT "0x%08llx"
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# else
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# define PTR_FMT "0x%08x"
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# endif
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// Solaris libc omits the leading 0x.
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#elif defined(__sun__) && defined(__svr4__)
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# define PTR_FMT "0x%p"
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#else
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# define PTR_FMT "%p"
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#endif
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char *heap_ptr;
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int main() {
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// Disable stderr buffering. Needed on Windows.
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setvbuf(stderr, NULL, _IONBF, 0);
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heap_ptr = (char *)malloc(10);
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fprintf(stderr, "heap_ptr: " PTR_FMT "\n", heap_ptr);
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// CHECK: heap_ptr: 0x[[ADDR:[0-9a-f]+]]
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free(heap_ptr);
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free(heap_ptr); // BOOM
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return 0;
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}
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void __asan_on_error() {
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int present = __asan_report_present();
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void *addr = __asan_get_report_address();
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const char *description = __asan_get_report_description();
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fprintf(stderr, "%s\n", (present == 1) ? "report present" : "");
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// CHECK: report present
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fprintf(stderr, "addr: " PTR_FMT "\n", addr);
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// CHECK: addr: {{0x0*}}[[ADDR]]
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fprintf(stderr, "description: %s\n", description);
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// CHECK: description: double-free
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}
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// CHECK: AddressSanitizer: attempting double-free on {{0x0*}}[[ADDR]] in thread T0
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