forked from OSchip/llvm-project
33 lines
750 B
C++
33 lines
750 B
C++
// Check that stores in signal handlers are not recorded in origin history.
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// This is, in fact, undesired behavior caused by our chained origins
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// implementation being not async-signal-safe.
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// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
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// RUN: not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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#include <signal.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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volatile int x, y;
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void SignalHandler(int signo) {
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y = x;
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}
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int main(int argc, char *argv[]) {
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int volatile z;
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x = z;
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signal(SIGUSR1, SignalHandler);
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kill(getpid(), SIGUSR1);
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signal(SIGUSR1, SIG_DFL);
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return y;
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}
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK-NOT: in SignalHandler
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