From f0900199d53df97bd792ac5a1678f8c477f117bb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Lapeyre?= <remi.lapeyre@henki.fr>
Date: Sat, 4 May 2019 01:30:53 +0200
Subject: Suppress clang warning (GH-12384)

---
 Modules/posixmodule.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 56ec3ee..221f710 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -1259,7 +1259,8 @@ _Py_Sigset_Converter(PyObject *obj, void *addr)
     long signum;
     int overflow;
 
-    if (sigemptyset(mask)) {
+    // The extra parens suppress the unreachable-code warning with clang on MacOS
+    if (sigemptyset(mask) < (0)) {
         /* Probably only if mask == NULL. */
         PyErr_SetFromErrno(PyExc_OSError);
         return 0;
-- 
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