st

commit ec3268961d1dc4072f6caa6f97db5436da2ff411
parent 769d48180747c3255653360d161c77ec2a2e8d13
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Mon,  4 Aug 2014 22:07:04 +0200

Add error message when child exits whit error

Master proccess was not showing any error message when the child
died with an error, and it was very confusing for the user (for
example with incorrect -e command).

Diffstat:
st.c
 | 
11
+++++------

1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/st.c b/st.c
@@ -1176,16 +1176,15 @@ execsh(void) {
 
 void
 sigchld(int a) {
-	int stat = 0;
+	int stat, ret;
 
 	if(waitpid(pid, &stat, 0) < 0)
 		die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
 
-	if(WIFEXITED(stat)) {
-		exit(WEXITSTATUS(stat));
-	} else {
-		exit(EXIT_FAILURE);
-	}
+	ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
+	if (ret != EXIT_SUCCESS)
+		die("child finished with error '%d'\n", stat);
+	exit(EXIT_SUCCESS);
 }
 
 void