diff --git a/qt5-qtwebengine.spec b/qt5-qtwebengine.spec
index 264e84a..9c00ab2 100644
--- a/qt5-qtwebengine.spec
+++ b/qt5-qtwebengine.spec
@@ -53,7 +53,7 @@
 Summary: Qt5 - QtWebEngine components
 Name:    qt5-qtwebengine
 Version: 5.15.2
-Release: 11%{?dist}
+Release: 12%{?dist}
 
 # See LICENSE.GPL LICENSE.LGPL LGPL_EXCEPTION.txt, for details
 # See also http://qt-project.org/doc/qt-5.0/qtdoc/licensing.html
@@ -105,6 +105,8 @@ Patch27: qtwebengine-gcc11.patch
 Patch28: qtwebengine-everywhere-src-5.15.2-#1904652.patch
 # Fix sandbox issue on 32-bit architectures with glibc >= 2.31 (from Debian)
 Patch29: qtwebengine-everywhere-src-5.15.2-sandbox-time64-syscalls.patch
+# Fix FTBFS with latest glibc, https://bugzilla.redhat.com/show_bug.cgi?id=1945595
+Patch30: qtwebengine-everywhere-5.15.2-SIGSTKSZ.patch
 
 ## Upstream patches:
 
@@ -414,6 +416,7 @@ popd
 %patch27 -p1 -b .gcc11
 %patch28 -p1 -b .rh#1904652
 %patch29 -p1 -b .sandbox-time64-syscalls
+%patch30 -p1 -b .SIGSTKSZ
 
 # the xkbcommon config/feature was renamed in 5.12, so need to adjust QT_CONFIG references
 # when building on older Qt releases
@@ -644,6 +647,9 @@ done
 
 
 %changelog
+* Wed Jun 16 2021 Rex Dieter <rdieter@fedoraproject.org> - 5.15.2-12
+- workaround SIGSTKSZ FTBFS (#19455950
+
 * Thu May 20 2021 Pete Walter <pwalter@fedoraproject.org> - 5.15.2-11
 - Rebuild for ICU 69
 
diff --git a/qtwebengine-everywhere-5.15.2-SIGSTKSZ.patch b/qtwebengine-everywhere-5.15.2-SIGSTKSZ.patch
new file mode 100644
index 0000000..44b6c87
--- /dev/null
+++ b/qtwebengine-everywhere-5.15.2-SIGSTKSZ.patch
@@ -0,0 +1,12 @@
+diff -up qtwebengine-everywhere-src-5.15.2/src/3rdparty/chromium/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc.SIGSTKSZ qtwebengine-everywhere-src-5.15.2/src/3rdparty/chromium/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc
+--- qtwebengine-everywhere-src-5.15.2/src/3rdparty/chromium/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc.SIGSTKSZ	2020-11-06 19:22:36.000000000 -0600
++++ qtwebengine-everywhere-src-5.15.2/src/3rdparty/chromium/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc	2021-06-16 09:20:00.175193987 -0500
+@@ -138,7 +138,7 @@ void InstallAlternateStackLocked() {
+   // SIGSTKSZ may be too small to prevent the signal handlers from overrunning
+   // the alternative stack. Ensure that the size of the alternative stack is
+   // large enough.
+-  static const unsigned kSigStackSize = std::max(16384, SIGSTKSZ);
++  static const unsigned kSigStackSize = std::max<unsigned>(16384, SIGSTKSZ);
+ 
+   // Only set an alternative stack if there isn't already one, or if the current
+   // one is too small.