0360f3218a
Contains test changes from https://github.com/llvm/llvm-project/pull/81677 that are simple test changes. For the most part just makes the tests allow more flexibility in the callstacks produced by asan. Note: this PR has the exact changes from https://github.com/llvm/llvm-project/pull/81677 in addition to a revert commit to remove the ones that require other things from that PR. This will be squashed, ofc. I just left things unsquashed for reviewing pleasure :). This is a non-functional-change
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
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// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
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// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
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// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
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// REQUIRES: compiler-rt-optimized
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// REQUIRES: stable-runtime
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#include <string.h>
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#include <stdlib.h>
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// We need a way to prevent the optimize from eliminating the
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// strncpy below (which otherwises writes to dead storage). We
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// need the read to be out-of-line to prevent memory forwarding
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// from making the memory dead again.
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int sink_memory(int N, char *p) __attribute__((noinline));
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int sink_memory(int N, char *p) {
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int sum = 0;
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for (int i = 0; i < N; i++)
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sum += p[i];
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return sum;
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}
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int main(int argc, char **argv) {
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char *hello = (char*)malloc(6);
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strcpy(hello, "hello");
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int rval = sink_memory(6, hello);
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char *short_buffer = (char*)malloc(9);
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strncpy(short_buffer, hello, 10); // BOOM
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// CHECK: {{WRITE of size 10 at 0x.* thread T0}}
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// CHECK: {{ #0 0x.* in .*strncpy}}
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// CHECK: {{ #1 0x.* in main .*strncpy-overflow.cpp:}}[[@LINE-3]]
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// CHECK: {{0x.* is located 0 bytes after 9-byte region}}
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// CHECK: {{allocated by thread T0 here:}}
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// CHECK: {{ #0 0x.* in .*malloc}}
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// CHECK: {{ #[1-3] 0x.* in main .*strncpy-overflow.cpp:}}[[@LINE-8]]
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return rval + sink_memory(9, short_buffer);
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}
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