From: Eli Zaretskii <eliz@gnu.org>
Date: Mon, 17 Mar 2025 12:16:45 +0000 (+0200)
Subject: ; * src/dispnew.c (adjust_glyph_matrix): Add comment (bug#77039).
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=34637ff5dddc7541dd8d54ed0315af604ca030aa;p=emacs.git

; * src/dispnew.c (adjust_glyph_matrix): Add comment (bug#77039).

(cherry picked from commit 4008e664a8dc6d92dda0ba0a5b0c717ab3f72e5c)
---

diff --git a/src/dispnew.c b/src/dispnew.c
index 58817ff014b..506373c3bf3 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -506,6 +506,8 @@ adjust_glyph_matrix (struct window *w, struct glyph_matrix *matrix, int x, int y
 	      row->glyphs[LEFT_MARGIN_AREA]
 		= xnrealloc (row->glyphs[LEFT_MARGIN_AREA],
 			     dim.width, sizeof (struct glyph));
+	      /* We actually need to clear only the 'frame' member, but
+                 it's easier to clear everything.  */
 	      memset (row->glyphs[LEFT_MARGIN_AREA], 0,
 		      dim.width * sizeof (struct glyph));