diff -Nru libunwind-1.2.1/debian/changelog libunwind-1.2.1/debian/changelog
--- libunwind-1.2.1/debian/changelog	2018-04-13 01:41:47.000000000 +1200
+++ libunwind-1.2.1/debian/changelog	2022-12-13 12:12:23.000000000 +1300
@@ -1,3 +1,11 @@
+libunwind (1.2.1-8ubuntu1) bionic; urgency=medium
+
+  * Manually enable C++ exception support only on i386 and amd64,
+    it is known broken on several other architectures.
+    Thanks to Bernhard Übelacker. (Closes: #923962) (LP: #1999104)
+
+ -- Matthew Ruffell <matthew.ruffell@canonical.com>  Tue, 13 Dec 2022 12:12:23 +1300
+
 libunwind (1.2.1-8) unstable; urgency=low
 
   * libunwind-dev: Depend on liblzma-dev for static linking.
diff -Nru libunwind-1.2.1/debian/rules libunwind-1.2.1/debian/rules
--- libunwind-1.2.1/debian/rules	2018-04-11 05:03:57.000000000 +1200
+++ libunwind-1.2.1/debian/rules	2022-12-13 12:12:12.000000000 +1300
@@ -6,6 +6,10 @@
 
 export DEB_BUILD_MAINT_OPTIONS = hardening=-all,+format
 
+ifneq (,$(filter $(DEB_HOST_ARCH), amd64 i386))
+  CXX_EXCEPTIONS=--enable-cxx-exceptions
+endif
+
 %:
 	dh $@
 
@@ -20,7 +24,7 @@
 	sed 's/@DEB_HOST_MULTIARCH@/$(DEB_HOST_MULTIARCH)/g' $< > $@
 
 override_dh_auto_configure:
-	dh_auto_configure -- --with-pic --enable-cxx-exceptions --includedir=\$${prefix}/include/$(DEB_HOST_MULTIARCH)
+	dh_auto_configure -- --with-pic $(CXX_EXCEPTIONS) --includedir=\$${prefix}/include/$(DEB_HOST_MULTIARCH)
 
 override_dh_install:
 	dh_install