use [[gnu::...]] attributes

src/queue/IdTable.hxx

@@ -4,8 +4,6 @@
 #ifndef MPD_ID_TABLE_HXX
 #define MPD_ID_TABLE_HXX
 
-#include "util/Compiler.h"
-
 #include <cassert>
 
 /**

src/queue/Playlist.hxx

@@ -96,17 +96,17 @@ struct playlist {
 		return queue.PositionToId(position);
 	}
 
-	gcc_pure
+	[[gnu::pure]]
 	int GetCurrentPosition() const noexcept;
 
-	gcc_pure
+	[[gnu::pure]]
 	int GetNextPosition() const noexcept;
 
 	/**
 	 * Returns the song object which is currently queued.  Returns
 	 * none if there is none (yet?) or if MPD isn't playing.
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	const DetachedSong *GetQueuedSong() const noexcept;
 
 	/**

src/queue/Queue.hxx

@@ -4,7 +4,6 @@
 #ifndef MPD_QUEUE_HXX
 #define MPD_QUEUE_HXX
 
-#include "util/Compiler.h"
 #include "IdTable.hxx"
 #include "SingleMode.hxx"
 #include "ConsumeMode.hxx"
@@ -141,14 +140,14 @@ struct Queue {
 		return items[position].id;
 	}
 
-	gcc_pure
+	[[gnu::pure]]
 	unsigned OrderToPosition(unsigned _order) const noexcept {
 		assert(_order < length);
 
 		return order[_order];
 	}
 
-	gcc_pure
+	[[gnu::pure]]
 	unsigned PositionToOrder(unsigned position) const noexcept {
 		assert(position < length);
 
@@ -160,7 +159,7 @@ struct Queue {
 		}
 	}
 
-	gcc_pure
+	[[gnu::pure]]
 	uint8_t GetPriorityAtPosition(unsigned position) const noexcept {
 		assert(position < length);
 
@@ -217,7 +216,7 @@ struct Queue {
 	 *
 	 * @return the next order number, or -1 to stop playback
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	int GetNextOrder(unsigned order) const noexcept;
 
 	/**
@@ -375,11 +374,11 @@ private:
 	 * Find the first item that has this specified priority or
 	 * higher.
 	 */
-	gcc_pure
+	[[gnu::pure]]
 	unsigned FindPriorityOrder(unsigned start_order, uint8_t priority,
 				   unsigned exclude_order) const noexcept;
 
-	gcc_pure
+	[[gnu::pure]]
 	unsigned CountSamePriority(unsigned start_order,
 				   uint8_t priority) const noexcept;
 };