Fix test_faulthandler on GCC 10

Fix also faulthandler.register(chain=True) stack.

Resolves: rhbz#1799092

python36.spec

@@ -359,6 +359,17 @@ Patch292: 00292-restore-PyExc_RecursionErrorInst-symbol.patch
 # See also: https://bugzilla.redhat.com/show_bug.cgi?id=1489816
 Patch294: 00294-define-TLS-cipher-suite-on-build-time.patch
 
+# 00343 #
+# bpo-38965: Fix faulthandler._stack_overflow() on GCC 10
+# Fixed upstream and backported from the 3.7 branch:
+# https://bugs.python.org/issue38965
+# https://github.com/python/cpython/commit/f4a21d3b239bf4f4e4e2a8a5936b9b040645b246
+#
+# bpo-21131: Fix faulthandler.register(chain=True) stack (GH-15276)
+# https://bugs.python.org/issue21131
+# https://github.com/python/cpython/commit/ac827edc493d3ac3f5b9b0cc353df1d4b418a9aa
+Patch343: 00343-faulthandler-gcc10.patch
+
 # (New patches go here ^^^)
 #
 # When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@@ -646,6 +657,7 @@ rm Lib/ensurepip/_bundled/*.whl
 %patch274 -p1
 %patch292 -p1
 %patch294 -p1
+%patch343 -p1
 
 
 # Remove files that should be generated by the build