commit 096b125db7ec254002a049ef3a5c1204bd7f0ad9
from: Lauri Tirkkonen <lotheac@iki.fi>
via: Hiltjo Posthuma <hiltjo@codemadness.org>
date: Tue Dec 11 17:36:02 2018 UTC

output child WEXITSTATUS/WTERMSIG on abnormal termination

commit - d7bf023b2f2d41cb6983bb3ce2c6d1bf049150b3
commit + 096b125db7ec254002a049ef3a5c1204bd7f0ad9
blob - a51d19c61b1210bd35a482a8a05002961ef100cd
blob + b8e607714d2b87863ac4e8ef3b3b68164e1c6ebd
--- st.c
+++ st.c
@@ -731,8 +731,10 @@ sigchld(int a)
 	if (pid != p)
 		return;
 
-	if (!WIFEXITED(stat) || WEXITSTATUS(stat))
-		die("child finished with error '%d'\n", stat);
+	if (WIFEXITED(stat) && WEXITSTATUS(stat))
+		die("child exited with status %d\n", WEXITSTATUS(stat));
+	else if (WIFSIGNALED(stat))
+		die("child terminated due to signal %d\n", WTERMSIG(stat));
 	exit(0);
 }