diff --git a/gtk4-gcc11.patch b/gtk4-gcc11.patch
new file mode 100644
index 0000000..0071e46
--- /dev/null
+++ b/gtk4-gcc11.patch
@@ -0,0 +1,72 @@
+diff --git a/gtk/gtktextchild.c b/gtk/gtktextchild.c
+index 4d5e30e..915b991 100644
+--- a/gtk/gtktextchild.c
++++ b/gtk/gtktextchild.c
+@@ -169,6 +169,12 @@ const GtkTextLineSegmentClass gtk_text_paintable_type = {
+ GtkTextLineSegment *
+ _gtk_paintable_segment_new (GdkPaintable *paintable)
+ {
++  /* 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;
+   guint flags;
+ 
+@@ -204,6 +210,7 @@ _gtk_paintable_segment_new (GdkPaintable *paintable)
+   g_object_ref (paintable);
+ 
+   return seg;
++#pragma GCC diagnostic pop
+ }
+ 
+ 
+@@ -280,6 +287,12 @@ 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);
+@@ -303,6 +316,7 @@ _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 a202ab6..aaac291 100644
+--- a/gtk/gtktextsegment.c
++++ b/gtk/gtktextsegment.c
+@@ -425,6 +425,13 @@ 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);
+@@ -440,6 +447,7 @@ _gtk_toggle_segment_new (GtkTextTagInfo *info, gboolean on)
+   seg->body.toggle.inNodeCounts = 0;
+ 
+   return seg;
++#pragma GCC diagnostic pop
+ }
+ 
+ void
diff --git a/gtk4.spec b/gtk4.spec
index 8f114bc..00061b4 100644
--- a/gtk4.spec
+++ b/gtk4.spec
@@ -23,6 +23,7 @@ Summary:        GTK graphical user interface library
 License:        LGPLv2+
 URL:            https://www.gtk.org
 Source0:        https://download.gnome.org/sources/gtk/4.0/gtk-%{version}.tar.xz
+Patch0:         gtk4-gcc11.patch
 
 BuildRequires:  cups-devel
 BuildRequires:  desktop-file-utils