From 1f24f5caa1c5370b942938d714cf203f5564de7c Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Wed, 6 Jan 2021 18:04:04 -0800
Subject: Ensure the endian test is constexpr

---
 common/endiantest.h | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/common/endiantest.h b/common/endiantest.h
index 0a20eb91..893653bd 100644
--- a/common/endiantest.h
+++ b/common/endiantest.h
@@ -4,11 +4,12 @@
 #if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__)
 #define IS_LITTLE_ENDIAN (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
 #else
-static const union {
-    unsigned int u;
-    unsigned char b[sizeof(unsigned int)];
-} EndianTest = { 1 };
-#define IS_LITTLE_ENDIAN (EndianTest.b[0] == 1)
+constexpr inline bool EndianTest() noexcept
+{
+    constexpr int test_val{1};
+    return static_cast<const char&>(test_val);
+}
+#define IS_LITTLE_ENDIAN (EndianTest())
 #endif
 
 #endif /* AL_ENDIANTEST_H */
-- 
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