sigsuspend: Make sure receive correct sigevent from do_kill

Change-Id: Ife9cf36a81f353e0575f6802f1e56f7dd4cb0425
Fujitsu: POSTK_DEBUG_TEMP_FIX_33
Refs: #1350

test/issues/1350/C1350.c

@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+
+static int catch_cnt;
+
+void sig_handler(int signum)
+{
+	switch (signum) {
+	case SIGUSR1:
+		puts("suspender caught SIGUSR1");
+		catch_cnt++;
+		break;
+	default:
+		printf("suspender caught unexpected signal %d\n", signum);
+	}
+	fflush(stdout);
+}
+
+int main(void)
+{
+	sigset_t sigset;
+	struct sigaction sact;
+	pid_t pid;
+	int ret = 0;
+	catch_cnt = 0;
+
+	if (fork() == 0) {
+		/* child (signal sender) */
+		sleep(3);
+		printf("child is sending SIGUSR1 (should be caught)\n");
+		kill(getppid(), SIGUSR1);
+		return 0;
+	}
+
+	/* parent (signal catcher) */
+	sigemptyset(&sact.sa_mask);
+	sact.sa_flags = 0;
+	sact.sa_handler = sig_handler;
+	if (sigaction(SIGUSR1, &sact, NULL) != 0) {
+		perror("sigaction() error");
+		ret = -1;
+		goto out;
+	}
+
+	sigfillset(&sigset);
+	sigdelset(&sigset, SIGUSR1);
+	printf("parent is waiting SIGUSR1\n");
+	if (sigsuspend(&sigset) == -1) {
+		printf("sigsuspend return -1 as expected\n");
+	}
+
+	if (catch_cnt == 1) {
+		printf("[OK] caught SIGUSR1\n");
+	}
+	else {
+		printf("[NG] SIGUSR1 count:%d\n", catch_cnt);
+		ret = -1;
+		goto out;
+	}
+
+out:
+	return ret;
+}