Fix sigchld

[st.git] / st.c

diff --git a/st.c b/st.c
index 6c167b5..300cab6 100644 (file)
--- a/st.c
+++ b/st.c
@@ -860,7 +860,6 @@ mousereport(XEvent *e) {
                        + ((state & ControlMask) ? 16 : 0);
        }
 
-       len = 0;
        if(IS_SET(MODE_MOUSESGR)) {
                len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
                                button, x+1, y+1,
@@ -1239,10 +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);