From f08b9a5b6bfd62741b6a1cd839ceee6a6e905828 Mon Sep 17 00:00:00 2001
From: Sylvain Becker <sylvain.becker@gmail.com>
Date: Tue, 29 Dec 2020 16:02:52 +0100
Subject: [PATCH] SDL_BlitScaled: prevent crash if dest width or height is 0

---
 src/video/SDL_stretch.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/video/SDL_stretch.c b/src/video/SDL_stretch.c
index 44c61b035..36dd84930 100644
--- a/src/video/SDL_stretch.c
+++ b/src/video/SDL_stretch.c
@@ -260,6 +260,10 @@ SDL_UpperSoftStretch(SDL_Surface * src, const SDL_Rect * srcrect,
         dstrect = &full_dst;
     }
 
+    if (dstrect->w == 0 || dstrect->h == 0) {
+        return 0;
+    }
+
     /* Lock the destination if it's in hardware */
     dst_locked = 0;
     if (SDL_MUSTLOCK(dst)) {