d9377c1ded
My newly added backtrace test (https://reviews.llvm.org/D150491) broke the Windows buildbot (https://lab.llvm.org/buildbot/#/builders/127/builds/48103) because they do not have execinfo.h. I expect the same will happen with the backtrace_symbols test (https://reviews.llvm.org/D150498) as well. This patch does a quick fix by restricting the test scope to glibc-2.27. (A tricker fix would take into account SANITIZER_INTERCEPT_BACKTRACE, which is defined as (SI_FREEBSD || SI_NETBSD || SI_GLIBC || SI_SOLARIS))
41 lines
948 B
C++
41 lines
948 B
C++
// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
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// Windows does not have execinfo.h. For now, be conservative and
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// restrict the test to glibc.
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// REQUIRES: glibc-2.27
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// Test the backtrace_symbols() interceptor.
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#include <assert.h>
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#include <execinfo.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define MAX_BT 100
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int main() {
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void **buffer = (void **)malloc(sizeof(void *) * MAX_BT);
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assert(buffer != NULL);
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int numEntries = backtrace(buffer, MAX_BT);
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printf("backtrace returned %d entries\n", numEntries);
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free(buffer);
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// Deliberate use-after-free of 'buffer'. We expect ASan to
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// catch this, without triggering internal sanitizer errors.
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char **strings = backtrace_symbols(buffer, numEntries);
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assert(strings != NULL);
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for (int i = 0; i < numEntries; i++) {
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printf("%s\n", strings[i]);
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}
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free(strings);
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// CHECK: use-after-free
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// CHECK: SUMMARY
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return 0;
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}
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