8b80b328d1
Summary: Check sigset_t arguments in ppoll, sig*wait*, sigprocmask interceptors, and the entire "struct sigaction" in sigaction. This can be done because sigemptyset/sigfullset are intercepted and signal masks should be correctly marked as initialized. Reviewers: vitalybuka Subscribers: kubamracek, llvm-commits Differential Revision: https://reviews.llvm.org/D37367 llvm-svn: 312576
36 lines
752 B
C++
36 lines
752 B
C++
// RUN: %clangxx_msan -std=c++11 -O0 -g %s -o %t && %run %t
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// RUN: %clangxx_msan -DPOSITIVE -std=c++11 -O0 -g %s -o %t && not %run %t 2>&1 | FileCheck %s
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#include <assert.h>
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#include <signal.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <sanitizer/msan_interface.h>
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void test_sigwait() {
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sigset_t s;
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#ifndef POSITIVE
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sigemptyset(&s);
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sigaddset(&s, SIGUSR1);
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#endif
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sigprocmask(SIG_BLOCK, &s, 0);
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// CHECK: MemorySanitizer: use-of-uninitialized-value
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if (pid_t pid = fork()) {
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kill(pid, SIGUSR1);
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_exit(0);
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} else {
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int sig;
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int res = sigwait(&s, &sig);
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assert(!res);
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// The following checks that sig is initialized.
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assert(sig == SIGUSR1);
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}
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}
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int main(void) {
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test_sigwait();
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return 0;
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}
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