temp/gtk+3.0: fix build (MR 3154)

Fix the build failure when built with newer gcc:

../gtk/gtktextsegment.c: In function '_gtk_toggle_segment_new':
../gtk/gtktextsegment.c:433:6: error: array subscript 'GtkTextLineSegment {aka struct _GtkTextLineSegment}[0]' is partly outside array bounds of 'unsigned char[40]' [-Werror=array-bounds]
  433 |   seg->type = on ? &gtk_text_toggle_on_type : &gtk_text_toggle_off_type;
      |      ^~

Patch source: https://gitlab.gnome.org/GNOME/gtk/-/commit/b4e110920aa18e6cc149ccbbfcd90b5143526e6d

temp/gtk+3.0/0001-Avoid-diagnostics-for-gcc-11-false-positive-out-of-b.patch

+From b4e110920aa18e6cc149ccbbfcd90b5143526e6d Mon Sep 17 00:00:00 2001
+From: Matthias Clasen <mclasen@redhat.com>
+Date: Mon, 11 Jan 2021 22:04:52 +0000
+Subject: [PATCH] Merge branch 'wip/kalev/gcc-11' into 'master'
+
+Avoid diagnostics for gcc-11 false positive out of bounds accesses
+
+See merge request GNOME/gtk!3064
+
+(cherry picked from commit 5044031b53988627c2937c6b5f8919a37e18f21f)
+
+c514c41d Avoid diagnostics for gcc-11 false positive out of bounds accesses
+---
+ gtk/gtktextchild.c   | 14 ++++++++++++++
+ gtk/gtktextsegment.c |  7 +++++++
+ 2 files changed, 21 insertions(+)
+
+diff --git a/gtk/gtktextchild.c b/gtk/gtktextchild.c
+index 2ff7de2394..cbbcf91d66 100644
+--- a/gtk/gtktextchild.c
++++ b/gtk/gtktextchild.c
+@@ -129,6 +129,12 @@ const GtkTextLineSegmentClass gtk_text_pixbuf_type = {
+ GtkTextLineSegment *
+ _gtk_pixbuf_segment_new (GdkPixbuf *pixbuf)
+ {
++  /* gcc-11 issues a diagnostic here because the size allocated
++     for SEG does not cover the entire size of a GtkTextLineSegment
++     and gcc has no way to know that the union will only be used
++     for limited types and the additional space is not needed.  */
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Warray-bounds"
+   GtkTextLineSegment *seg;
+ 
+   seg = g_slice_alloc (PIXBUF_SEG_SIZE);
+@@ -148,6 +154,7 @@ _gtk_pixbuf_segment_new (GdkPixbuf *pixbuf)
+   g_object_ref (pixbuf);
+ 
+   return seg;
++#pragma GCC diagnostic pop
+ }
+ 
+ 
+@@ -224,6 +231,12 @@ const GtkTextLineSegmentClass gtk_text_child_type = {
+ GtkTextLineSegment *
+ _gtk_widget_segment_new (GtkTextChildAnchor *anchor)
+ {
++  /* gcc-11 issues a diagnostic here because the size allocated
++     for SEG does not cover the entire size of a GtkTextLineSegment
++     and gcc has no way to know that the union will only be used
++     for limited types and the additional space is not needed.  */
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Warray-bounds"
+   GtkTextLineSegment *seg;
+ 
+   seg = g_slice_alloc (WIDGET_SEG_SIZE);
+@@ -247,6 +260,7 @@ _gtk_widget_segment_new (GtkTextChildAnchor *anchor)
+   g_object_ref (anchor);
+   
+   return seg;
++#pragma GCC diagnostic pop
+ }
+ 
+ void
+diff --git a/gtk/gtktextsegment.c b/gtk/gtktextsegment.c
+index 8539db5297..8e00b1ddc9 100644
+--- a/gtk/gtktextsegment.c
++++ b/gtk/gtktextsegment.c
+@@ -426,6 +426,12 @@ char_segment_check_func (GtkTextLineSegment *segPtr, GtkTextLine *line)
+ GtkTextLineSegment*
+ _gtk_toggle_segment_new (GtkTextTagInfo *info, gboolean on)
+ {
++  /* gcc-11 issues a diagnostic here because the size allocated
++     for SEG does not cover the entire size of a GtkTextLineSegment
++     and gcc has no way to know that the union will only be used
++     for limited types and the additional space is not needed.  */
++#pragma GCC diagnostic push
++#pragma GCC diagnostic ignored "-Warray-bounds"
+   GtkTextLineSegment *seg;
+ 
+   seg = g_slice_alloc (TSEG_SIZE);
+@@ -441,6 +447,7 @@ _gtk_toggle_segment_new (GtkTextTagInfo *info, gboolean on)
+   seg->body.toggle.inNodeCounts = 0;
+ 
+   return seg;
++#pragma GCC diagnostic pop
+ }
+ 
+ void
+-- 
+2.36.1
+

temp/gtk+3.0/APKBUILD

 # Forked from Alpine to apply Purism's patches for responsivness
 pkgname=gtk+3.0
 pkgver=9999_git20210602
-pkgrel=0
+pkgrel=1
 # pureos/byzantium branch
 _commit="f05e4021ed82bfbabf566398d0511b6745a5745e"
 pkgdesc="The GTK+ Toolkit (v3)"
@@ -60,6 +60,7 @@ checkdepends="
 	gdk-pixbuf
 	"
 source="https://source.puri.sm/Librem5/gtk/-/archive/$_commit/gtk-$_commit.tar.gz
+	0001-Avoid-diagnostics-for-gcc-11-false-positive-out-of-b.patch
 	"
 
 builddir="$srcdir/gtk-$_commit"
@@ -138,4 +139,5 @@ doc() {
 
 sha512sums="
 942d2e24bdb4e9fea7fc5bbd3d41ab203b69f6352566f43164e59842d49163e37d638858032cf2322b9b4c279c8c9a07a63d58fa7ec8554f3194c17ae3185fd7  gtk-f05e4021ed82bfbabf566398d0511b6745a5745e.tar.gz
+346514bb7c1853afcbeff4a5a25a2b9800e135e44271e48cdf400dc607dadd41af57d89ee4f4e24aedc358292d9c45db931dbbd84dae6a10886d8ae633ca8434  0001-Avoid-diagnostics-for-gcc-11-false-positive-out-of-b.patch
 "