From 9863b920b0efae02fd8f9a1080d5888521b44ddf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BC=A0=E5=B0=8F=E7=99=BD?= <364772080@qq.com>
Date: Fri, 19 Apr 2024 13:28:39 +0800
Subject: [PATCH] windows: Fix panic with some unicode characters (#10750)

Fix #10749

Release Notes:

- N/A
---
 crates/gpui/src/platform/windows/direct_write.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/crates/gpui/src/platform/windows/direct_write.rs b/crates/gpui/src/platform/windows/direct_write.rs
index 87b8921b43..0cfc0ac914 100644
--- a/crates/gpui/src/platform/windows/direct_write.rs
+++ b/crates/gpui/src/platform/windows/direct_write.rs
@@ -928,8 +928,11 @@ impl IDWriteTextRenderer_Impl for TextRenderer {
     ) -> windows::core::Result<()> {
         unsafe {
             let glyphrun = &*glyphrun;
-            let desc = &*glyphrundescription;
             let glyph_count = glyphrun.glyphCount as usize;
+            if glyph_count == 0 {
+                return Ok(());
+            }
+            let desc = &*glyphrundescription;
             let utf16_length_per_glyph = desc.stringLength as usize / glyph_count;
             let context =
                 &mut *(clientdrawingcontext as *const RendererContext as *mut RendererContext);