fix up signal-related UB reporting

1 files changed, 7 insertions, 1 deletions

diff --git a/src/signal/__signal_handler.c b/src/signal/__signal_handler.c
index ca529999..9cd9eda7 100644
--- a/src/signal/__signal_handler.c
+++ b/src/signal/__signal_handler.c
@@ -8,7 +8,13 @@ void __signal_handler(int sig)
 	if (___signal.handlers[sig] != NULL) {
 		___signal.handlers[sig](sig);
 	}
-	/* TODO: if signal is fatal, trigger UB */
+
+	/* TODO: signal number to name */
+	if (sig == SIGFPE || sig == SIGILL || sig == SIGSEGV) {
+		___signal.current = 0;
+		__undefined("Signal handler for signal %d returned", sig);
+	}
+
 	___signal.current = 0;
 }