dispatch: use reserved spelling for typeof

`typeof` is a GNU extension, use the reserved spelling for the keyword.
This allows clang to properly deal with this symbol on Windows builds.

Author: compnerd

src/benchmark.c

@@ -60,7 +60,7 @@ _dispatch_benchmark_init(void *context)
 	} while (i < cnt);
 	delta = _dispatch_uptime() - start;
 
-	lcost = (typeof(lcost)) delta;
+	lcost = (__typeof__(lcost)) delta;
 #if HAVE_MACH_ABSOLUTE_TIME
 	lcost *= bdata->tbi.numer;
 	lcost /= bdata->tbi.denom;
@@ -113,7 +113,7 @@ dispatch_benchmark_f(size_t count, register void *ctxt,
 	} while (i < count);
 	delta = _dispatch_uptime() - start;
 
-	conversion = (typeof(conversion)) delta;
+	conversion = (__typeof__(conversion)) delta;
 #if HAVE_MACH_ABSOLUTE_TIME
 	conversion *= bdata.tbi.numer;
 	big_denom = bdata.tbi.denom;

src/queue.c

@@ -5762,11 +5762,11 @@ dispatch_channel_enqueue(dispatch_channel_t dch, void *ctxt)
 
 #ifndef __APPLE__
 #if __BLOCKS__
-void typeof(dispatch_channel_async) dispatch_channel_async
+void __typeof__(dispatch_channel_async) dispatch_channel_async
 		__attribute__((__alias__("dispatch_async")));
 #endif
 
-void typeof(dispatch_channel_async_f) dispatch_channel_async_f
+void __typeof__(dispatch_channel_async_f) dispatch_channel_async_f
 		__attribute__((__alias__("dispatch_async_f")));
 #endif
 

src/shims/atomic.h

@@ -137,7 +137,7 @@ typedef struct { unsigned long __opaque_zero; } os_atomic_dependency_t;
 #define OS_ATOMIC_DEPENDENCY_NONE     ((os_atomic_dependency_t){ 0UL })
 #define os_atomic_make_dependency(v)  ((void)(v), OS_ATOMIC_DEPENDENCY_NONE)
 #define os_atomic_inject_dependency(p, e) \
-	        ((typeof(*(p)) *)((p) + _os_atomic_auto_dependency(e).__opaque_zero))
+	        ((__typeof__(*(p)) *)((p) + _os_atomic_auto_dependency(e).__opaque_zero))
 #define os_atomic_load_with_dependency_on(p, e) \
 	        os_atomic_load(os_atomic_inject_dependency(p, e), dependency)