forked from OSchip/llvm-project
43 lines
929 B
C++
43 lines
929 B
C++
// RUN: %clangxx_msan -O0 -std=c++11 -g %s -o %t
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// RUN: %run %t _ 2>&1 | FileCheck %s --check-prefix=CLEAN
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// RUN: not %run %t A 2>&1 | FileCheck %s --check-prefix=A
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// RUN: not %run %t B 2>&1 | FileCheck %s --check-prefix=B
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#include <assert.h>
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#include <poll.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sanitizer/msan_interface.h>
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int main(int argc, char **argv) {
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char T = argv[1][0];
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struct timespec ts;
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ts.tv_sec = 0;
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ts.tv_nsec = 1000;
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int res = ppoll(nullptr, 0, &ts, nullptr);
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assert(res == 0);
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if (T == 'A') {
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__msan_poison(&ts.tv_sec, sizeof(ts.tv_sec));
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ppoll(nullptr, 0, &ts, nullptr);
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// A: use-of-uninitialized-value
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}
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// A-NOT: ==1
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// B: ==1
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fprintf(stderr, "==1\n");
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sigset_t sig;
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if (T != 'B')
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sigemptyset(&sig);
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ppoll(nullptr, 0, &ts, &sig);
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// B: use-of-uninitialized-value
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// B-NOT: ==2
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// CLEAN: ==2
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fprintf(stderr, "==2\n");
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return 0;
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}
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