commit d70a45142caa6bdeb52052ccee9b57458b7b41de
author William A. Kennington III <wak@google.com> Thu Dec 07 19:22:32 2023 -0800
committer William A. Kennington III <wak@google.com> Fri Dec 08 15:51:51 2023 -0800
tree 63244f9d83fb674708d74d237183ebce8b1af3f9
parent b32092f785015c9e6f949bceda271416604fe805

treewide: Test constexpr more thoroughly

Declaring object wide constexpr values unveiled some issues with
constant evaluation that were not previously noticed.

Change-Id: If94e92861f5335ff1292915ed54a9675b56785f2
Signed-off-by: William A. Kennington III <wak@google.com>

test/net/addr/ip.cpp

diff --git a/test/net/addr/ip.cpp b/test/net/addr/ip.cpp
index 5fef26a..1379c19 100644
--- a/test/net/addr/ip.cpp
+++ b/test/net/addr/ip.cpp
@@ -183,6 +183,9 @@
     std::hash<InAnyAddr>{}(In6Addr{});
 }
 
+constexpr auto empty4 = "0.0.0.0"_ip;
+constexpr auto empty6 = "::"_ip;
+
 TEST(FromStr, InAnyAddr)
 {
     constexpr FromStr<InAnyAddr> fs;
@@ -196,8 +199,8 @@
     EXPECT_TRUE(tv);
     constexpr bool tv2 = detail::CompileInAnyAddr("::").valid;
     EXPECT_TRUE(tv2);
-    EXPECT_EQ((In4Addr{}), "0.0.0.0"_ip);
-    EXPECT_EQ((In6Addr{}), "::"_ip);
+    EXPECT_EQ((In4Addr{}), empty4);
+    EXPECT_EQ((In6Addr{}), empty6);
     EXPECT_EQ("ff02::"_ip, (In6Addr{0xff, 2}));
     EXPECT_EQ("1::"_ip, (In6Addr{0, 1}));
     EXPECT_EQ("100::"_ip, (In6Addr{1}));
@@ -229,10 +232,12 @@
     EXPECT_EQ("0.0.0.0"_ip, std::optional<InAnyAddr>(In4Addr{}));
 }
 
+constexpr auto loop4 = "127.0.0.0"_ip4;
+constexpr bool loop4IsLoop = loop4.isLoopback();
+
 TEST(Loopback, In4Addr)
 {
-    constexpr bool t = "127.0.0.0"_ip4.isLoopback();
-    EXPECT_TRUE(t);
+    EXPECT_TRUE(loop4IsLoop);
     EXPECT_TRUE("127.0.0.1"_ip4.isLoopback());
     EXPECT_TRUE("127.0.0.83"_ip4.isLoopback());
     EXPECT_TRUE("127.253.0.0"_ip4.isLoopback());
@@ -248,10 +253,12 @@
     EXPECT_FALSE("255.255.255.255"_ip4.isLoopback());
 }
 
+constexpr auto loop6 = "::1"_ip6;
+constexpr bool loop6IsLoop = loop6.isLoopback();
+
 TEST(Loopback, In6Addr)
 {
-    constexpr bool t = "::1"_ip6.isLoopback();
-    EXPECT_TRUE(t);
+    EXPECT_TRUE(loop6IsLoop);
 
     EXPECT_FALSE("::2"_ip6.isLoopback());
     EXPECT_FALSE("1::"_ip6.isLoopback());