From 6de651ba67439cfb18904d92a49351118a850e0e Mon Sep 17 00:00:00 2001
From: Jochen Sprickerhof <git@jochen.sprickerhof.de>
Date: Mon, 27 Dec 2021 11:41:42 +0100
Subject: Fix null pointer access in strhandle

According to the spec the argument is optional for 104, so p can be
NULL as can be tested with printf '\x1b]104\x07'. This is a regression
of 8e31030.
---
 st.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'st.c')

diff --git a/st.c b/st.c
index 516e5c5..8cd6ef5 100644
--- a/st.c
+++ b/st.c
@@ -2075,10 +2075,10 @@ strhandle(void)
 				break;
 			p = strescseq.args[2];
 			/* FALLTHROUGH */
-		case 104: /* color reset, here p = NULL */
+		case 104: /* color reset */
 			j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
 
-			if (!strcmp(p, "?"))
+			if (p && !strcmp(p, "?"))
 				osc4_color_response(j);
 			else if (xsetcolorname(j, p)) {
 				if (par == 104 && narg <= 1)
-- 
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