From 1f755a74b7a0268aad6a55764f4ceba3ba4063ff Mon Sep 17 00:00:00 2001
From: Po Lu <luangruo@yahoo.com>
Date: Fri, 18 Feb 2022 18:01:58 +0800
Subject: [PATCH] Fix a crash on some versions of GTK
* src/emacsgtkfixed.c (XSetWMNormalHints): Fix potential
arithmetic fault.
---
src/emacsgtkfixed.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/emacsgtkfixed.c b/src/emacsgtkfixed.c
index cd5d1d14353..f2c9fa7b7db 100644
--- a/src/emacsgtkfixed.c
+++ b/src/emacsgtkfixed.c
@@ -183,9 +183,12 @@ XSetWMSizeHints (Display *d,
if (hints->flags & PResizeInc)
{
- if (data[5] % hints->width_inc)
+ /* Some versions of GTK set PResizeInc even if the
+ increments are at their initial values. */
+
+ if (hints->width_inc && data[5] % hints->width_inc)
data[5] += (hints->width_inc - (data[5] % hints->width_inc));
- if (data[6] % hints->height_inc)
+ if (hints->height_inc && data[6] % hints->height_inc)
data[6] += (hints->height_inc - (data[6] % hints->height_inc));
}
}
--
2.39.5