From 49874d2cff79a7cafadc0c88f28199c454e981ab Mon Sep 17 00:00:00 2001
From: Nick Brown <nickbrow@google.com>
Date: Wed, 12 Oct 2022 14:23:50 -0700
Subject: [PATCH] Avoid UB when bit shifting

The 0 literal is a signed integer; bitshifting its (negative) complement is
undefined behavior.

PiperOrigin-RevId: 480717288
---
 test/syscalls/linux/socket_ip_unbound.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/syscalls/linux/socket_ip_unbound.cc b/test/syscalls/linux/socket_ip_unbound.cc
index d470a7206..cd8ecb655 100644
--- a/test/syscalls/linux/socket_ip_unbound.cc
+++ b/test/syscalls/linux/socket_ip_unbound.cc
@@ -284,7 +284,7 @@ TEST_P(IPUnboundSocketTest, SmallTOSOptionSize) {
     EXPECT_EQ(get_sz, expect_sz);
     // Account for partial copies by getsockopt, retrieve the lower
     // bits specified by get_sz, while comparing against expect_tos.
-    EXPECT_EQ(get & ~(~0 << (get_sz * 8)), expect_tos);
+    EXPECT_EQ(get & ~(~static_cast<uint>(0) << (get_sz * 8)), expect_tos);
   }
 }