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Discard ignored signals on New Technology (#592)

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Gavin Hayes 2022-09-05 12:17:56 -04:00 • committed by GitHub
parent 4b4ea046c4
commit 7de2f229a7
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4 changed files with 57 additions and 1 deletions
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19
test/libc/calls/sigaction_test.c
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@ -156,3 +156,22 @@ noubsan void ubsanTrumpsSystemsEngineering(void) {
TEST(sigaction, sigFpe_handlerCanEditProcessStateAndRecoverExecution) {
ubsanTrumpsSystemsEngineering();
}
static unsigned OnSignalCnt = 0;
void OnSignal(int sig, siginfo_t *si, void *ctx) {
OnSignalCnt++;
}
TEST(sigaction, ignoringSignalDiscardsSignal) {
struct sigaction sa = {.sa_sigaction = OnSignal, .sa_flags = SA_SIGINFO};
ASSERT_EQ(0, sigaction(SIGUSR1, &sa, NULL));
sigset_t blocked;
sigemptyset(&blocked);
sigaddset(&blocked, SIGUSR1);
ASSERT_EQ(0, sigprocmask(SIG_SETMASK, &blocked, NULL));
ASSERT_EQ(0, raise(SIGUSR1));
ASSERT_NE(SIG_ERR, signal(SIGUSR1, SIG_IGN));
ASSERT_EQ(0, sigaction(SIGUSR1, &sa, NULL));
ASSERT_EQ(0, sigprocmask(SIG_UNBLOCK, &blocked, NULL));
EXPECT_EQ(0, OnSignalCnt);
}