forked from OSchip/llvm-project
tsan: add test for malloc/free in signal handler
llvm-svn: 170205
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// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <unistd.h>
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static void handler(int, siginfo_t*, void*) {
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volatile char *p = (char*)malloc(1);
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p[0] = 0;
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free((void*)p);
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}
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int main() {
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struct sigaction act = {};
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act.sa_sigaction = &handler;
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sigaction(SIGPROF, &act, 0);
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kill(getpid(), SIGPROF);
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sleep(1);
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return 0;
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}
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// CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal
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// CHECK: #0 malloc
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// CHECK: #1 handler(int, siginfo*, void*) {{.*}}signal_malloc.cc:9
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