diff --git a/0001-Partially-revert-813a928c7c3cf98670b6043149880ed5c95.patch b/0001-Partially-revert-813a928c7c3cf98670b6043149880ed5c95.patch
new file mode 100644
index 0000000..d6b1a5c
--- /dev/null
+++ b/0001-Partially-revert-813a928c7c3cf98670b6043149880ed5c95.patch
@@ -0,0 +1,32 @@
+From 45b201ea42f69510713ddd09fb092ed6f93ad1db Mon Sep 17 00:00:00 2001
+From: Ulf Hermann <ulf.hermann@qt.io>
+Date: Wed, 20 Jan 2021 10:42:36 +0100
+Subject: [PATCH] Partially revert 813a928c7c3cf98670b6043149880ed5c955efb9
+
+Otherwise ASAN complains about mismatched new/delete.
+
+Change-Id: I76ddcc388309e20055c93c68b9b6fa8a11b884e1
+Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
+Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
+(cherry picked from commit 606b03d0a35e71565c3a91588ef2db45b9262e27)
+---
+ src/corelib/tools/qsharedpointer_impl.h | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/corelib/tools/qsharedpointer_impl.h b/src/corelib/tools/qsharedpointer_impl.h
+index 4aee98af53..790c187cb9 100644
+--- a/src/corelib/tools/qsharedpointer_impl.h
++++ b/src/corelib/tools/qsharedpointer_impl.h
+@@ -155,6 +155,9 @@ namespace QtSharedPointer {
+ #endif
+         inline void checkQObjectShared(...) { }
+         inline void setQObjectShared(...) { }
++
++        inline void operator delete(void *ptr) { ::operator delete(ptr); }
++        inline void operator delete(void *, void *) { }
+     };
+     // sizeof(ExternalRefCountData) = 12 (32-bit) / 16 (64-bit)
+ 
+-- 
+2.25.1
+
diff --git a/libqt5-qtbase.changes b/libqt5-qtbase.changes
index 9b2cf3f..e1f75ec 100644
--- a/libqt5-qtbase.changes
+++ b/libqt5-qtbase.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Apr 13 07:06:06 UTC 2021 - Fabian Vogt <fvogt@suse.com>
+
+- Add patch to fix possible crash caused by GCC 11 build fix:
+  * 0001-Partially-revert-813a928c7c3cf98670b6043149880ed5c95.patch
+
 -------------------------------------------------------------------
 Mon Feb  8 09:16:47 UTC 2021 - Fabian Vogt <fvogt@suse.com>
 
diff --git a/libqt5-qtbase.spec b/libqt5-qtbase.spec
index 6ef3233..47681e7 100644
--- a/libqt5-qtbase.spec
+++ b/libqt5-qtbase.spec
@@ -72,6 +72,7 @@ Patch1001:      0001-Let-QXcbConnection-getTimestamp-properly-exit-when-X.patch
 Patch2001:      0002-Synthesize-Enter-LeaveEvent-for-accepted-QTabletEven.patch
 Patch2002:      0001-Fix-build-with-GCC-11-include-limits.patch
 Patch2003:      0002-Build-fixes-for-GCC-11.patch
+Patch2004:      0001-Partially-revert-813a928c7c3cf98670b6043149880ed5c95.patch
 BuildRequires:  cups-devel
 BuildRequires:  double-conversion-devel
 BuildRequires:  gcc-c++