derek.holloway
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75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
// Check that the stack trace debugging API works and returns correct
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// malloc and free stacks.
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// RUN: %clangxx_asan -O0 %if MSVC %{ /wd4477 %} %s -o %t && not %run %t 2>&1 | FileCheck %s
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// FIXME: Figure out why allocation/free stack traces may be too short on ARM.
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// REQUIRES: stable-runtime
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#if _WIN64
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#define PTR "%llx"
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#else
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#define PTR "%lx"
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#endif
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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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char *mem;
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void func1() {
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mem = (char *)malloc(10);
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}
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void func2() {
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free(mem);
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}
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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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func1();
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func2();
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void *trace[100];
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size_t num_frames = 100;
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int thread_id;
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num_frames = __asan_get_alloc_stack(mem, trace, num_frames, &thread_id);
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fprintf(stderr, "alloc stack retval %s\n", (num_frames > 0 && num_frames < 10)
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? "ok" : "");
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// CHECK: alloc stack retval ok
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fprintf(stderr, "thread id = %d\n", thread_id);
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// CHECK: thread id = 0
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fprintf(stderr, "0x" PTR "\n", trace[0]);
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// CHECK: 0x{{0*}}[[ALLOC_FRAME_0:[0-9a-f]+]]
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fprintf(stderr, "0x" PTR "\n", trace[1]);
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// CHECK: 0x{{0*}}[[ALLOC_FRAME_1:[0-9a-f]+]]
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num_frames = 100;
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num_frames = __asan_get_free_stack(mem, trace, num_frames, &thread_id);
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fprintf(stderr, "free stack retval %s\n", (num_frames > 0 && num_frames < 10)
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? "ok" : "");
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// CHECK: free stack retval ok
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fprintf(stderr, "thread id = %d\n", thread_id);
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// CHECK: thread id = 0
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fprintf(stderr, "0x" PTR "\n", trace[0]);
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// CHECK: 0x{{0*}}[[FREE_FRAME_0:[0-9a-f]+]]
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fprintf(stderr, "0x" PTR "\n", trace[1]);
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// CHECK: 0x{{0*}}[[FREE_FRAME_1:[0-9a-f]+]]
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mem[0] = 'A'; // BOOM
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// CHECK: ERROR: AddressSanitizer: heap-use-after-free
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// CHECK: WRITE of size 1 at 0x{{.*}}
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// CHECK: freed by thread T0 here:
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// CHECK: #0 0x{{0*}}[[FREE_FRAME_0]]
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// CHECK: #1 0x{{0*}}[[FREE_FRAME_1]]
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// CHECK: previously allocated by thread T0 here:
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// CHECK: #0 0x{{0*}}[[ALLOC_FRAME_0]]
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// CHECK: #1 0x{{0*}}[[ALLOC_FRAME_1]]
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return 0;
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}
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