bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[dick.r.chiang]

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With my particular font sizing, I get an X11 BadMatch (invalid parameter
attributes) error one out of every 10 starts or so.


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From 95911e85c12e91123ebc4448700f67877b4109cc Mon Sep 17 00:00:00 2001
From: dickmao <dick.r.chiang@gmail.com>
Date: Sun, 3 Jul 2022 10:34:20 -0400
Subject: [PATCH] Avoid a BadMatch X11 error

x_uncatch_errors() might do a sync that
x_ignore_errors_for_next_request() doesn't?  The details are unclear.

* src/xfaces.c (unregister_colors, compare_fonts_by_sort_order,
get_lface_attributes, lface_fully_specified_p, merge_face_vectors,
merge_named_face, merge_face_ref, Finternal_make_lisp_face,
Finternal_merge_in_global_face, lface_equal_p,
Finternal_lisp_face_empty_p, clear_face_gcs, free_realized_faces,
cache_face, lookup_named_face, lookup_derived_face,
gui_supports_face_attributes_p, Fdisplay_supports_face_attributes_p,
Finternal_set_font_selection_order, realize_named_face,
face_at_buffer_position, merge_faces, Fdump_face): C89.
* src/xterm.c (x_frame_highlight): Revert 2c4922d76b7.
(x_frame_unhighlight): Revert 2c4922d76b7.
---
 src/xfaces.c | 112 +++++++++++++++++++++------------------------------
 src/xterm.c  |  18 ++-------
 2 files changed, 51 insertions(+), 79 deletions(-)

diff --git a/src/xfaces.c b/src/xfaces.c
index 8ae922578ec..c0d8e2e740c 100644
--- a/src/xfaces.c
+++ b/src/xfaces.c
@@ -440,8 +440,7 @@ unregister_color (unsigned long pixel)
 void
 unregister_colors (unsigned long *pixels, int n)
 {
-  int i;
-  for (i = 0; i < n; ++i)
+  for (int i = 0; i < n; ++i)
     unregister_color (pixels[i]);
 }
 
@@ -1471,9 +1470,8 @@ compare_fonts_by_sort_order (const void *v1, const void *v2)
   Lisp_Object const *p2 = v2;
   Lisp_Object font1 = *p1;
   Lisp_Object font2 = *p2;
-  int i;
 
-  for (i = 0; i < FONT_SIZE_INDEX; i++)
+  for (int i = 0; i < FONT_SIZE_INDEX; i++)
     {
       enum font_property_index idx = font_props_for_sorting[i];
       Lisp_Object val1 = AREF (font1, idx), val2 = AREF (font2, idx);
@@ -2069,9 +2067,7 @@ get_lface_attributes (struct window *w,
 				  face_name, NAMED_MERGE_POINT_REMAP,
 				  &named_merge_points))
 	{
-	  int i;
-
-	  for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
+	  for (int i = 1; i < LFACE_VECTOR_SIZE; ++i)
 	    attrs[i] = Qunspecified;
 
 	  return merge_face_ref (w, f, XCDR (face_remapping), attrs,
@@ -2091,15 +2087,12 @@ get_lface_attributes (struct window *w,
 static bool
 lface_fully_specified_p (Lisp_Object attrs[LFACE_VECTOR_SIZE])
 {
-  int i;
-
-  for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; ++i)
     if (i != LFACE_FONT_INDEX && i != LFACE_INHERIT_INDEX
-        && i != LFACE_DISTANT_FOREGROUND_INDEX)
-      if ((UNSPECIFIEDP (attrs[i]) || IGNORE_DEFFACE_P (attrs[i])))
-	break;
-
-  return i == LFACE_VECTOR_SIZE;
+        && i != LFACE_DISTANT_FOREGROUND_INDEX
+	&& (UNSPECIFIEDP (attrs[i]) || IGNORE_DEFFACE_P (attrs[i])))
+      return false;
+  return true;
 }
 
 #ifdef HAVE_WINDOW_SYSTEM
@@ -2220,7 +2213,6 @@ merge_face_vectors (struct window *w,
 		    struct frame *f, const Lisp_Object *from, Lisp_Object *to,
                     struct named_merge_point *named_merge_points)
 {
-  int i;
   Lisp_Object font = Qnil;
 
   /* If FROM inherits from some other faces, merge their attributes into
@@ -2243,7 +2235,7 @@ merge_face_vectors (struct window *w,
       to[LFACE_FONT_INDEX] = font;
     }
 
-  for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; ++i)
     if (!UNSPECIFIEDP (from[i]))
       {
 	if (i == LFACE_HEIGHT_INDEX && !FIXNUMP (from[i]))
@@ -2364,8 +2356,7 @@ merge_named_face (struct window *w,
       if (ok && !EQ (face_name, Qdefault))
 	{
 	  struct face *deflt = FACE_FROM_ID (f, DEFAULT_FACE_ID);
-	  int i;
-	  for (i = 1; i < LFACE_VECTOR_SIZE; i++)
+	  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
 	    if (EQ (from[i], Qreset))
 	      from[i] = deflt->lface[i];
 	}
@@ -2628,10 +2619,8 @@ merge_face_ref (struct window *w,
 		    return true;
 
 		  Lisp_Object scratch_attrs[LFACE_VECTOR_SIZE];
-		  int i;
-
 		  scratch_attrs[0] = Qface;
-		  for (i = 1; i < LFACE_VECTOR_SIZE; i++)
+		  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
 		    scratch_attrs[i] = Qunspecified;
 		  if (!merge_face_ref (w, f, parent_face, scratch_attrs,
 				       err_msgs, named_merge_points, 0))
@@ -2884,7 +2873,6 @@ DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face,
 {
   Lisp_Object global_lface, lface;
   struct frame *f;
-  int i;
 
   CHECK_SYMBOL (face);
   global_lface = lface_from_face_name (NULL, face, false);
@@ -2920,7 +2908,7 @@ DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face,
       Fputhash (face, Fcons (face_id, global_lface), Vface_new_frame_defaults);
     }
   else if (f == NULL)
-    for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
+    for (int i = 1; i < LFACE_VECTOR_SIZE; ++i)
       ASET (global_lface, i, Qunspecified);
 
   /* Add a frame-local definition.  */
@@ -2933,7 +2921,7 @@ DEFUN ("internal-make-lisp-face", Finternal_make_lisp_face,
           Fputhash (face, lface, f->face_hash_table);
 	}
       else
-	for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
+	for (int i = 1; i < LFACE_VECTOR_SIZE; ++i)
 	  ASET (lface, i, Qunspecified);
     }
   else
@@ -4152,7 +4140,6 @@ DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face,
 Default face attributes override any local face attributes.  */)
   (Lisp_Object face, Lisp_Object frame)
 {
-  int i;
   Lisp_Object global_lface, local_lface, *gvec, *lvec;
   struct frame *f = XFRAME (frame);
 
@@ -4169,7 +4156,7 @@ DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face,
      "global before local" priority.  */
   lvec = XVECTOR (local_lface)->contents;
   gvec = XVECTOR (global_lface)->contents;
-  for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; ++i)
     if (IGNORE_DEFFACE_P (gvec[i]))
       ASET (local_lface, i, Qunspecified);
     else if (! UNSPECIFIEDP (gvec[i]))
@@ -4190,6 +4177,11 @@ DEFUN ("internal-merge-in-global-face", Finternal_merge_in_global_face,
 	     the previously-cached vector.  */
 	  memcpy (attrs, oldface->lface, sizeof attrs);
 
+	  /* Make explicit any attributes whose value is 'reset'.  */
+	  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
+	    if (EQ (lvec[i], Qreset))
+	      lvec[i] = attrs[i];
+
 	  merge_face_vectors (NULL, f, lvec, attrs, 0);
 	  vcopy (local_lface, 0, attrs, LFACE_VECTOR_SIZE);
 	  newface = realize_face (c, lvec, DEFAULT_FACE_ID);
@@ -4328,10 +4320,9 @@ face_attr_equal_p (Lisp_Object v1, Lisp_Object v2)
 static bool
 lface_equal_p (Lisp_Object *v1, Lisp_Object *v2)
 {
-  int i;
   bool equal_p = true;
 
-  for (i = 1; i < LFACE_VECTOR_SIZE && equal_p; ++i)
+  for (int i = 1; i < LFACE_VECTOR_SIZE && equal_p; ++i)
     equal_p = face_attr_equal_p (v1[i], v2[i]);
 
   return equal_p;
@@ -4374,13 +4365,11 @@ DEFUN ("internal-lisp-face-empty-p", Finternal_lisp_face_empty_p,
 {
   struct frame *f = EQ (frame, Qt) ? NULL : decode_live_frame (frame);
   Lisp_Object lface = lface_from_face_name (f, face, true);
-  int i;
 
-  for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; ++i)
     if (!UNSPECIFIEDP (AREF (lface, i)))
-      break;
-
-  return i == LFACE_VECTOR_SIZE ? Qt : Qnil;
+      return Qnil;
+  return Qt;
 }
 
 DEFUN ("frame--face-hash-table", Fframe_face_hash_table, Sframe_face_hash_table,
@@ -4657,8 +4646,7 @@ clear_face_gcs (struct face_cache *c)
 {
   if (c && FRAME_WINDOW_P (c->f))
     {
-      int i;
-      for (i = BASIC_FACE_ID_SENTINEL; i < c->used; ++i)
+      for (int i = BASIC_FACE_ID_SENTINEL; i < c->used; ++i)
 	{
 	  struct face *face = c->faces_by_id[i];
 	  if (face && face->gc)
@@ -4686,7 +4674,7 @@ free_realized_faces (struct face_cache *c)
 {
   if (c && c->used)
     {
-      int i, size;
+      int size;
       struct frame *f = c->f;
 
       /* We must block input here because we can't process X events
@@ -4694,7 +4682,7 @@ free_realized_faces (struct face_cache *c)
 	 current matrix still references freed faces.  */
       block_input ();
 
-      for (i = 0; i < c->used; ++i)
+      for (int i = 0; i < c->used; ++i)
 	{
 	  free_realized_face (f, c->faces_by_id[i]);
 	  c->faces_by_id[i] = NULL;
@@ -4797,10 +4785,13 @@ cache_face (struct face_cache *c, struct face *face, uintptr_t hash)
 
   /* Find a free slot in C->faces_by_id and use the index of the free
      slot as FACE->id.  */
+  face->id = c->used;
   for (i = 0; i < c->used; ++i)
     if (c->faces_by_id[i] == NULL)
-      break;
-  face->id = i;
+      {
+	face->id = i;
+	break;
+      }
 
 #ifdef GLYPH_DEBUG
   /* Check that FACE got a unique id.  */
@@ -4818,7 +4809,7 @@ cache_face (struct face_cache *c, struct face *face, uintptr_t hash)
 #endif /* GLYPH_DEBUG */
 
   /* Maybe enlarge C->faces_by_id.  */
-  if (i == c->used)
+  if (face->id == c->used)
     {
       if (c->used == c->size)
 	c->faces_by_id = xpalloc (c->faces_by_id, &c->size, 1, MAX_FACE_ID,
@@ -4826,7 +4817,7 @@ cache_face (struct face_cache *c, struct face *face, uintptr_t hash)
       c->used++;
     }
 
-  c->faces_by_id[i] = face;
+  c->faces_by_id[face->id] = face;
 }
 
 
@@ -4958,8 +4949,7 @@ lookup_named_face (struct window *w, struct frame *f,
   memcpy (attrs, default_face->lface, sizeof attrs);
 
   /* Make explicit any attributes whose value is 'reset'.  */
-  int i;
-  for (i = 1; i < LFACE_VECTOR_SIZE; i++)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
     if (EQ (symbol_attrs[i], Qreset))
       symbol_attrs[i] = attrs[i];
 
@@ -5135,8 +5125,7 @@ lookup_derived_face (struct window *w,
   memcpy (attrs, default_face->lface, sizeof attrs);
 
   /* Make explicit any attributes whose value is 'reset'.  */
-  int i;
-  for (i = 1; i < LFACE_VECTOR_SIZE; i++)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
     if (EQ (symbol_attrs[i], Qreset))
       symbol_attrs[i] = attrs[i];
 
@@ -5190,8 +5179,7 @@ gui_supports_face_attributes_p (struct frame *f,
   Lisp_Object lattrs[LFACE_VECTOR_SIZE];
 
   /* Make explicit any attributes whose value is 'reset'.  */
-  int i;
-  for (i = 1; i < LFACE_VECTOR_SIZE; i++)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
     {
       if (EQ (attrs[i], Qreset))
 	lattrs[i] = def_attrs[i];
@@ -5245,7 +5233,6 @@ gui_supports_face_attributes_p (struct frame *f,
       int face_id;
       struct face *face;
       Lisp_Object merged_attrs[LFACE_VECTOR_SIZE];
-      int i;
 
       memcpy (merged_attrs, def_attrs, sizeof merged_attrs);
 
@@ -5262,7 +5249,7 @@ gui_supports_face_attributes_p (struct frame *f,
       if (face->font == def_face->font
 	  || ! face->font)
 	return false;
-      for (i = FONT_TYPE_INDEX; i <= FONT_SIZE_INDEX; i++)
+      for (int i = FONT_TYPE_INDEX; i <= FONT_SIZE_INDEX; i++)
 	if (! EQ (face->font->props[i], def_face->font->props[i]))
 	  {
 	    Lisp_Object s1, s2;
@@ -5499,7 +5486,6 @@ Point (2) implies that a `:weight black' attribute will be satisfied by
   (Lisp_Object attributes, Lisp_Object display)
 {
   bool supports = false;
-  int i;
   Lisp_Object frame;
   struct frame *f;
   struct face *def_face;
@@ -5531,7 +5517,7 @@ Point (2) implies that a `:weight black' attribute will be satisfied by
   CHECK_LIVE_FRAME (frame);
   f = XFRAME (frame);
 
-  for (i = 0; i < LFACE_VECTOR_SIZE; i++)
+  for (int i = 0; i < LFACE_VECTOR_SIZE; i++)
     attrs[i] = Qunspecified;
   merge_face_ref (NULL, f, attributes, attrs, true, NULL, 0);
 
@@ -5572,12 +5558,11 @@ DEFUN ("internal-set-font-selection-order",
   (Lisp_Object order)
 {
   Lisp_Object list;
-  int i;
+  int i = 0;
   int indices[ARRAYELTS (font_sort_order)];
 
   CHECK_LIST (order);
   memset (indices, 0, sizeof indices);
-  i = 0;
 
   for (list = order;
        CONSP (list) && i < ARRAYELTS (indices);
@@ -5911,8 +5896,7 @@ realize_named_face (struct frame *f, Lisp_Object symbol, int id)
 
   /* Handle the 'reset' pseudo-value of any attribute by replacing it
      with the corresponding value of the default face.  */
-  int i;
-  for (i = 1; i < LFACE_VECTOR_SIZE; i++)
+  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
     if (EQ (symbol_attrs[i], Qreset))
       symbol_attrs[i] = attrs[i];
   /* Merge SYMBOL's face with the default face.  */
@@ -6531,7 +6515,7 @@ face_at_buffer_position (struct window *w, ptrdiff_t pos,
   struct frame *f = XFRAME (w->frame);
   Lisp_Object attrs[LFACE_VECTOR_SIZE];
   Lisp_Object prop, position;
-  ptrdiff_t i, noverlays;
+  ptrdiff_t noverlays;
   Lisp_Object *overlay_vec;
   ptrdiff_t endpos;
   Lisp_Object propname = mouse ? Qmouse_face : Qface;
@@ -6610,7 +6594,8 @@ face_at_buffer_position (struct window *w, ptrdiff_t pos,
      from the overlays, if any.  */
   if (mouse)
     {
-      for (prop = Qnil, i = noverlays - 1; i >= 0 && NILP (prop); --i)
+      prop = Qnil;
+      for (ptrdiff_t i = noverlays - 1; i >= 0 && NILP (prop); --i)
 	{
 	  Lisp_Object oend;
 	  ptrdiff_t oendpos;
@@ -6633,7 +6618,7 @@ face_at_buffer_position (struct window *w, ptrdiff_t pos,
     }
   else
     {
-      for (i = 0; i < noverlays; i++)
+      for (ptrdiff_t i = 0; i < noverlays; i++)
 	{
 	  Lisp_Object oend;
 	  ptrdiff_t oendpos;
@@ -6857,11 +6842,10 @@ merge_faces (struct window *w, Lisp_Object face_name, int face_id,
 	{
 	  struct face *deflt = FACE_FROM_ID (f, DEFAULT_FACE_ID);
 	  Lisp_Object lface_attrs[LFACE_VECTOR_SIZE];
-	  int i;
 
 	  memcpy (lface_attrs, face->lface, LFACE_VECTOR_SIZE);
 	  /* Make explicit any attributes whose value is 'reset'.  */
-	  for (i = 1; i < LFACE_VECTOR_SIZE; i++)
+	  for (int i = 1; i < LFACE_VECTOR_SIZE; i++)
 	    if (EQ (lface_attrs[i], Qreset))
 	      lface_attrs[i] = deflt->lface[i];
 	  merge_face_vectors (w, f, lface_attrs, attrs, 0);
@@ -6965,10 +6949,8 @@ DEFUN ("dump-face", Fdump_face, Sdump_face, 0, 1, 0, doc: /* */)
 {
   if (NILP (n))
     {
-      int i;
-
       fputs ("font selection order: ", stderr);
-      for (i = 0; i < ARRAYELTS (font_sort_order); ++i)
+      for (int i = 0; i < ARRAYELTS (font_sort_order); ++i)
 	fprintf (stderr, "%d ", font_sort_order[i]);
       putc ('\n', stderr);
 
@@ -6976,7 +6958,7 @@ DEFUN ("dump-face", Fdump_face, Sdump_face, 0, 1, 0, doc: /* */)
       debug_print (Vface_alternative_font_family_alist);
       putc ('\n', stderr);
 
-      for (i = 0; i < FRAME_FACE_CACHE (SELECTED_FRAME ())->used; ++i)
+      for (int i = 0; i < FRAME_FACE_CACHE (SELECTED_FRAME ())->used; ++i)
 	Fdump_face (make_fixnum (i));
     }
   else
diff --git a/src/xterm.c b/src/xterm.c
index dc7e3283a5c..d70e78b6b34 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -10633,10 +10633,6 @@ x_scroll_run (struct window *w, struct run *run)
 static void
 x_frame_highlight (struct frame *f)
 {
-  struct x_display_info *dpyinfo;
-
-  dpyinfo = FRAME_DISPLAY_INFO (f);
-
   /* We used to only do this if Vx_no_window_manager was non-nil, but
      the ICCCM (section 4.1.6) says that the window's border pixmap
      and border pixel are window attributes which are "private to the
@@ -10646,10 +10642,10 @@ x_frame_highlight (struct frame *f)
      the window-manager in use, tho something more is at play since I've been
      using that same window-manager binary for ever.  Let's not crash just
      because of this (bug#9310).  */
-  x_ignore_errors_for_next_request (dpyinfo);
+  x_catch_errors (FRAME_X_DISPLAY (f));
   XSetWindowBorder (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
 		    f->output_data.x->border_pixel);
-  x_stop_ignoring_errors (dpyinfo);
+  x_uncatch_errors ();
   unblock_input ();
   gui_update_cursor (f, true);
   x_set_frame_alpha (f);
@@ -10658,23 +10654,17 @@ x_frame_highlight (struct frame *f)
 static void
 x_frame_unhighlight (struct frame *f)
 {
-  struct x_display_info *dpyinfo;
-
-  dpyinfo = FRAME_DISPLAY_INFO (f);
-
   /* We used to only do this if Vx_no_window_manager was non-nil, but
      the ICCCM (section 4.1.6) says that the window's border pixmap
      and border pixel are window attributes which are "private to the
      client", so we can always change it to whatever we want.  */
-
   block_input ();
   /* Same as above for XSetWindowBorder (bug#9310).  */
-  x_ignore_errors_for_next_request (dpyinfo);
+  x_catch_errors (FRAME_X_DISPLAY (f));
   XSetWindowBorderPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
 			  f->output_data.x->border_tile);
-  x_stop_ignoring_errors (dpyinfo);
+  x_uncatch_errors ();
   unblock_input ();
-
   gui_update_cursor (f, true);
   x_set_frame_alpha (f);
 }
-- 
2.36.1


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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-ucb hides /home/dick/.local/share/emacs/site-lisp/chess-ucb
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-scid hides /home/dick/.local/share/emacs/site-lisp/chess-scid
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-network hides /home/dick/.local/share/emacs/site-lisp/chess-network
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-autosave hides /home/dick/.local/share/emacs/site-lisp/chess-autosave
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-plain hides /home/dick/.local/share/emacs/site-lisp/chess-plain
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-perft hides /home/dick/.local/share/emacs/site-lisp/chess-perft
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-glaurung hides /home/dick/.local/share/emacs/site-lisp/chess-glaurung
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-ai hides /home/dick/.local/share/emacs/site-lisp/chess-ai
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-fruit hides /home/dick/.local/share/emacs/site-lisp/chess-fruit
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-none hides /home/dick/.local/share/emacs/site-lisp/chess-none
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-polyglot hides /home/dick/.local/share/emacs/site-lisp/chess-polyglot
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-crafty hides /home/dick/.local/share/emacs/site-lisp/chess-crafty
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess hides /home/dick/.local/share/emacs/site-lisp/chess
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-images hides /home/dick/.local/share/emacs/site-lisp/chess-images
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-gnuchess hides /home/dick/.local/share/emacs/site-lisp/chess-gnuchess
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-fen hides /home/dick/.local/share/emacs/site-lisp/chess-fen
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-ics hides /home/dick/.local/share/emacs/site-lisp/chess-ics
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-ics2 hides /home/dick/.local/share/emacs/site-lisp/chess-ics2
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-common hides /home/dick/.local/share/emacs/site-lisp/chess-common
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-input hides /home/dick/.local/share/emacs/site-lisp/chess-input
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-announce hides /home/dick/.local/share/emacs/site-lisp/chess-announce
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-sound hides /home/dick/.local/share/emacs/site-lisp/chess-sound
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-sjeng hides /home/dick/.local/share/emacs/site-lisp/chess-sjeng
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-algebraic hides /home/dick/.local/share/emacs/site-lisp/chess-algebraic
/home/dick/.emacs.d/elpa/transient-0.3.7snapshot/transient hides /home/dick/.local/share/emacs/0.3.1/lisp/transient

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base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind inotify lcms2
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bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Katsumi Yamaoka]

On Sun, 03 Jul 2022 10:45:07 -0400, dick.r.chiang@gmail.com wrote:
> With my particular font sizing, I get an X11 BadMatch (invalid parameter
> attributes) error one out of every 10 starts or so.

By the patch, 29.0.50 built on Cygwin got stable.  It crashed
for the BadMatch error whenever I did something.  Thank you.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

dick.r.chiang@gmail.com writes:

> With my particular font sizing, I get an X11 BadMatch (invalid parameter
> attributes) error one out of every 10 starts or so.
>
>>From 95911e85c12e91123ebc4448700f67877b4109cc Mon Sep 17 00:00:00 2001
> From: dickmao <dick.r.chiang@gmail.com>
> Date: Sun, 3 Jul 2022 10:34:20 -0400
> Subject: [PATCH] Avoid a BadMatch X11 error
>
> x_uncatch_errors() might do a sync that
> x_ignore_errors_for_next_request() doesn't?  The details are unclear.

Where is the error, and what request is generating it?

The X server reports errors asynchronously, the next time Xlib or Emacs
calls XSync after the erroring request is made.

x_ignore_errors_for_next_request and x_stop_ignoring_errors don't call
XSync (unlike the usual error handling and checking functions) -- they
only make a note of the range of requests made inside them, so the
x_error_handler knows that it should ignore the error.  This is done for
speed, since syncing is slow, especially over connections with high
latency.

So assuming the erroring request is actually XSetWindowBorder, please
see why x_error_handler is actually not ignoring the error.

The useless reformatting of code in xfaces.c, is, as usual for patches
from you, unacceptable.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[dick]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: 0001-Avoid-segfault.patch --]
[-- Type: text/x-diff, Size: 1472 bytes --]

From 5d2442a836a5641f8f1c2b4a844fe510a77bd8c5 Mon Sep 17 00:00:00 2001
From: dickmao <dick.r.chiang@gmail.com>
Date: Mon, 4 Jul 2022 00:47:34 -0400
Subject: [PATCH] Avoid segfault

* src/xterm.c (x_connection_closed): Avoid segfault.
---
 src/xterm.c | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/xterm.c b/src/xterm.c
index c5acb450837..464887da975 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -23518,17 +23518,18 @@ x_connection_closed (Display *dpy, const char *error_message, bool ioerror)
 
 	  fprintf (stderr, "X error handlers currently installed:\n");
 
-	  for (failable = dpyinfo->failable_requests;
-	       failable < dpyinfo->next_failable_request;
-	       ++failable)
-	    {
-	      if (failable->end)
-		fprintf (stderr, "Ignoring errors between %lu to %lu\n",
-			 failable->start, failable->end);
-	      else
-		fprintf (stderr, "Ignoring errors from %lu onwards\n",
-			 failable->start);
-	    }
+	  if (dpyinfo)
+	    for (failable = dpyinfo->failable_requests;
+		 failable < dpyinfo->next_failable_request;
+		 ++failable)
+	      {
+		if (failable->end)
+		  fprintf (stderr, "Ignoring errors between %lu to %lu\n",
+			   failable->start, failable->end);
+		else
+		  fprintf (stderr, "Ignoring errors from %lu onwards\n",
+			   failable->start);
+	      }
 
 	  for (stack = x_error_message; stack; stack = stack->prev)
 	    fprintf (stderr, "Trapping errors from %lu\n",
-- 
2.36.1

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Katsumi Yamaoka <yamaoka@jpl.org> writes:

> By the patch, 29.0.50 built on Cygwin got stable.  It crashed
> for the BadMatch error whenever I did something.  Thank you.

Would you please show the complete error message resulting from the
BadMatch error with a new build from master?

Also, what toolkit are you using?

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[po lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Po Lu <luangruo@yahoo.com> writes:

> x_ignore_errors_for_next_request and x_stop_ignoring_errors don't call
> XSync (unlike the usual error handling and checking functions) -- they
> only make a note of the range of requests made inside them, so the
> x_error_handler knows that it should ignore the error.  This is done for
> speed, since syncing is slow, especially over connections with high
> latency.

I reproduced the bug with a GTK build.  It should be fixed now, please
test.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

dick <dick.r.chiang@gmail.com> writes:

>>From 5d2442a836a5641f8f1c2b4a844fe510a77bd8c5 Mon Sep 17 00:00:00 2001
> From: dickmao <dick.r.chiang@gmail.com>
> Date: Mon, 4 Jul 2022 00:47:34 -0400
> Subject: [PATCH] Avoid segfault
>
> * src/xterm.c (x_connection_closed): Avoid segfault.
> ---
>  src/xterm.c | 23 ++++++++++++-----------
>  1 file changed, 12 insertions(+), 11 deletions(-)
>
> diff --git a/src/xterm.c b/src/xterm.c
> index c5acb450837..464887da975 100644
> --- a/src/xterm.c
> +++ b/src/xterm.c
> @@ -23518,17 +23518,18 @@ x_connection_closed (Display *dpy, const char *error_message, bool ioerror)
>  
>  	  fprintf (stderr, "X error handlers currently installed:\n");
>  
> -	  for (failable = dpyinfo->failable_requests;
> -	       failable < dpyinfo->next_failable_request;
> -	       ++failable)
> -	    {
> -	      if (failable->end)
> -		fprintf (stderr, "Ignoring errors between %lu to %lu\n",
> -			 failable->start, failable->end);
> -	      else
> -		fprintf (stderr, "Ignoring errors from %lu onwards\n",
> -			 failable->start);
> -	    }
> +	  if (dpyinfo)
> +	    for (failable = dpyinfo->failable_requests;
> +		 failable < dpyinfo->next_failable_request;
> +		 ++failable)
> +	      {
> +		if (failable->end)
> +		  fprintf (stderr, "Ignoring errors between %lu to %lu\n",
> +			   failable->start, failable->end);
> +		else
> +		  fprintf (stderr, "Ignoring errors from %lu onwards\n",
> +			   failable->start);
> +	      }
>  
>  	  for (stack = x_error_message; stack; stack = stack->prev)
>  	    fprintf (stderr, "Trapping errors from %lu\n",

That piece of code is already inside "if (dpyinfo)" -- in fact, your
patch misses a use-after-free, which has already been fixed on master.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Lars Ingebrigtsen]

Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text
editors" <bug-gnu-emacs@gnu.org> writes:

> That piece of code is already inside "if (dpyinfo)"

Indeed.  And aren't we testing for dpyinfo twice already in that code?

Unless I'm misreading, it's:

  /* If DPYINFO is null, this means we didn't open the display in the
     first place, so don't try to close it.  */
  if (dpyinfo)
    {
... no code here that sets dpyinfo ...
[...]
      if (dpyinfo->terminal == terminal_list
	  && !terminal_list->next_terminal)
	{
	  fprintf (stderr, "%s\n", error_msg);

	  if (!ioerror && dpyinfo)
	    {

That && dpyinfo seems redundant?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text
> editors" <bug-gnu-emacs@gnu.org> writes:
>
>> That piece of code is already inside "if (dpyinfo)"
>
> Indeed.  And aren't we testing for dpyinfo twice already in that code?
>
> Unless I'm misreading, it's:
>
>   /* If DPYINFO is null, this means we didn't open the display in the
>      first place, so don't try to close it.  */
>   if (dpyinfo)
>     {
> ... no code here that sets dpyinfo ...
> [...]
>       if (dpyinfo->terminal == terminal_list
> 	  && !terminal_list->next_terminal)
> 	{
> 	  fprintf (stderr, "%s\n", error_msg);
>
> 	  if (!ioerror && dpyinfo)
> 	    {
>
> That && dpyinfo seems redundant?

Yes, sorry.  That's left over from another piece of code.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[dick]

BrfGEtSakote> That piece of code is already inside "if (dpyinfo)" -- in
BrfGEtSakote> fact, your patch misses a use-after-free, which has
BrfGEtSakote> already been fixed on master.

Sheesh, how about "Thanks, I fixed it in bd034b3," as opposed to
implying there was never a bug, and that my patch fails to
address an unrelated issue.

I get it though.  My own social and technical failings in the private
sector have also led me to emacs, a halfway house for greybeards exiled
from the labor market.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

dick <dick.r.chiang@gmail.com> writes:

> Sheesh, how about "Thanks, I fixed it in bd034b3," as opposed to
> implying there was never a bug, and that my patch fails to
> address an unrelated issue.

bd034b3 fixes an unrelated issue, which is that the display info
structure is freed with the terminal and shouldn't be accessed after it
is deleted.

> I get it though.  My own social and technical failings in the private
> sector have also led me to emacs, a halfway house for greybeards exiled
> from the labor market.

Making personal attacks will only shun you from that sector further.

So, has the bug you reported been fixed or not? I couldn't reliably
reproduce it on my machine in the first place.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Katsumi Yamaoka]

On Mon, 04 Jul 2022 13:21:46 +0800, Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors wrote:
> Katsumi Yamaoka <yamaoka@jpl.org> writes:

>> By the patch, 29.0.50 built on Cygwin got stable.  It crashed
>> for the BadMatch error whenever I did something.  Thank you.

> Would you please show the complete error message resulting from the
> BadMatch error with a new build from master?

I got not to be able to reproduce the problem thanks to your
recent change in revno c4e93b6. :)  But it at least said "GDK"
error and "Badmatch".

> Also, what toolkit are you using?

gtk3

Anyway thank you very much for fixing this.
Regards,

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[dick]

Yes, it's fixed.  Well done.

bug#56372: 29.0.50; [PATCH] Avoid BadMatch X11 error

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

dick <dick.r.chiang@gmail.com> writes:

> Yes, it's fixed.

Closing.  Thanks for testing.