commit 66c42f8bbcf5fa261a0d944ce8fbca9220abd11d
author Benjamin Peterson <benjamin@python.org> Sat Jun 29 16:51:59 2019 -0700
committer GitHub <noreply@github.com> Sat Jun 29 16:51:59 2019 -0700
tree 1c85e26843e107c485fe32db6b0e9b447710e391
parent 323e743d4879f1cd861d0b252775797fb7938755

[3.8] bpo-37437: Pass -Wno-unreachable-code when compiling expat. (GH-14473)

(cherry picked from commit 95da310078a9364bae9ab3f2ad9c71e34306a70c)

Co-authored-by: Benjamin Peterson <benjamin@python.org>

setup.py

diff --git a/setup.py b/setup.py
index 598f581..edc3434 100644
--- a/setup.py
+++ b/setup.py
@@ -1599,9 +1599,9 @@
 
             cc = sysconfig.get_config_var('CC').split()[0]
             ret = os.system(
-                      '"%s" -Werror -Wimplicit-fallthrough -E -xc /dev/null >/dev/null 2>&1' % cc)
+                      '"%s" -Werror -Wno-unreachable-code -E -xc /dev/null >/dev/null 2>&1' % cc)
             if ret >> 8 == 0:
-                extra_compile_args.append('-Wno-implicit-fallthrough')
+                extra_compile_args.append('-Wno-unreachable-code')
 
         self.add(Extension('pyexpat',
                            define_macros=define_macros,