Don't copy from non-enabled current glyphs (bug#74274)

* src/dispnew.c (prepare_desired_root_row): Check if current row is
enabled.

(cherry picked from commit 8fa26765c0dcedcadf884195189e337cb9778cb8)

diff --git a/src/dispnew.c b/src/dispnew.c
index b202d66761165b12661874d39b98c809f0b7770c..15fbf983b4b43b1e12e9179eae7367ff1de37e1a 100644 (file)
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -3517,9 +3517,12 @@ prepare_desired_root_row (struct frame *root, int y)
   if (!root_row->enabled_p)
     {
       struct glyph_row *from = MATRIX_ROW (root->current_matrix, y);
-      memcpy (root_row->glyphs[0], from->glyphs[0],
-             root->current_matrix->matrix_w * sizeof (struct glyph));
-      root_row->enabled_p = true;
+      if (from->enabled_p)
+       {
+         memcpy (root_row->glyphs[0], from->glyphs[0],
+                 root->current_matrix->matrix_w * sizeof (struct glyph));
+         root_row->enabled_p = true;
+       }
     }
   return root_row;
 }