From: Jochen Sprickerhof <dwm@jochen.sprickerhof.de>
Date: Wed, 22 Apr 2015 15:22:34 +0000 (+0200)
Subject: Fix sigchld
X-Git-Url: https://git.danieliu.xyz/?a=commitdiff_plain;h=07ce96a3a0f4a650933f5f586082cbf2064ea2c1;p=st.git

Fix sigchld

Only wait for termination of the shell.
---

diff --git a/st.c b/st.c
index d954288..300cab6 100644
--- a/st.c
+++ b/st.c
@@ -1238,10 +1238,14 @@ execsh(void) {
 void
 sigchld(int a) {
 	int stat, ret;
+	pid_t p;
 
-	if(waitpid(pid, &stat, 0) < 0)
+	if((p = waitpid(pid, &stat, WNOHANG)) < 0)
 		die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
 
+	if(pid != p)
+		return;
+
 	ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
 	if (ret != EXIT_SUCCESS)
 		die("child finished with error '%d'\n", stat);