Compiler.h: drop gcc_alignas(), use plain C++11 alignas()

src/Compiler.h

@@ -160,14 +160,6 @@
 #define gcc_restrict
 #endif
 
-/* C++11 features */
-
-#if defined(__cplusplus)
-
-#define gcc_alignas(T, fallback) alignas(T)
-
-#endif
-
 #ifndef __has_feature
   // define dummy macro for non-clang compilers
   #define __has_feature(x) 0

src/util/Manual.hxx

@@ -50,7 +50,7 @@
  */
 template<class T>
 class Manual {
-	gcc_alignas(T, 8)
+	alignas(T)
 	char data[sizeof(T)];
 
 #ifndef NDEBUG

test/test_byte_reverse.cxx

@@ -49,9 +49,9 @@ CPPUNIT_TEST_SUITE_REGISTRATION(ByteReverseTest);
 void
 ByteReverseTest::TestByteReverse2()
 {
-	static const char src[] gcc_alignas(uint16_t, 2) = "123456";
+	static const char src[] alignas(uint16_t) = "123456";
 	static const char result[] = "214365";
-	static uint8_t dest[ARRAY_SIZE(src)] gcc_alignas(uint16_t, 2);
+	static uint8_t dest[ARRAY_SIZE(src)] alignas(uint16_t);
 
 	reverse_bytes(dest, (const uint8_t *)src,
 		      (const uint8_t *)(src + ARRAY_SIZE(src) - 1), 2);
@@ -73,9 +73,9 @@ ByteReverseTest::TestByteReverse3()
 void
 ByteReverseTest::TestByteReverse4()
 {
-	static const char src[] gcc_alignas(uint32_t, 4) = "12345678";
+	static const char src[] alignas(uint32_t) = "12345678";
 	static const char result[] = "43218765";
-	static uint8_t dest[ARRAY_SIZE(src)] gcc_alignas(uint32_t, 4);
+	static uint8_t dest[ARRAY_SIZE(src)] alignas(uint32_t);
 
 	reverse_bytes(dest, (const uint8_t *)src,
 		      (const uint8_t *)(src + ARRAY_SIZE(src) - 1), 4);