X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/44edd521a0d425ea79433bf170233a2b0084820b..0925c80cd3d8f9a973d699fc1dbdbe79cca62988:/src/dispnew.c

diff --git a/src/dispnew.c b/src/dispnew.c
index a5057273bf..15190abfb7 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -1185,6 +1185,9 @@ increment_row_positions (row, delta, delta_bytes)
   MATRIX_ROW_END_CHARPOS (row) += delta;
   MATRIX_ROW_END_BYTEPOS (row) += delta_bytes;
 
+  if (!row->enabled_p)
+    return;
+
   /* Increment positions in glyphs.  */
   for (area = 0; area < LAST_AREA; ++area)
     for (i = 0; i < row->used[area]; ++i)
@@ -5798,8 +5801,9 @@ buffer_posn_from_coords (w, x, y, pos, object, dx, dy, width, height)
     }
 #endif
 
-  row = MATRIX_ROW (w->current_matrix, it.vpos);
-  if (row->enabled_p)
+  if (it.vpos < w->current_matrix->nrows
+      && (row = MATRIX_ROW (w->current_matrix, it.vpos),
+	  row->enabled_p))
     {
       if (it.hpos < row->used[TEXT_AREA])
 	{