Possible fix for gcc

Author: Griezn

CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.28)
 project(SR C CXX)
 
-set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD 23)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 

include/queue.h

@@ -9,8 +9,8 @@
 #include "data.h"
 
 typedef struct {
-    _Alignas(64) atomic_size_t  head;
-    _Alignas(64) atomic_size_t  tail;
+    alignas(64) atomic_size_t  head;
+    alignas(64) atomic_size_t  tail;
     size_t                      mask;
     data_t                      **buffer;
 } spsc_queue_t;

src/queue.c

@@ -69,7 +69,7 @@ bool spsc_is_empty(spsc_queue_t *q)
 
 void empty_queue(spsc_queue_t *q)
 {
-    data_t *output;
+    data_t *output = NULL;
     while (!spsc_is_empty(q)) {
         spsc_dequeue(q, &output);
         free(output->data);