workaround for conflisct with clang/unistd.h

ChangeLog

@@ -1,3 +1,8 @@
+2020-02-08  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* Headers/Foundation/NSXPCConnection.h: Workaround for clash between
+	unistd.h and clang's reserved word __block
+
 2020-02-05  Fred Kiefer <fredkiefer@gmx.de>
 
 	* configure.ac: Use pkg-config to check for libxml.

Headers/Foundation/NSXPCConnection.h

@@ -28,11 +28,17 @@
 #include <Foundation/NSObject.h>
 #include <Foundation/NSError.h>
 
-#ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h> // for gid_t and uid_t
+/* Some versions of unistd.h use __block, but that's a reserved word
+ * for Clang so we temporarily redefine it while including the file.
+ */
+#ifdef __block
+#undef __block
 #endif
-
+#define __block __gs_unistd_block
 #include <unistd.h>    // for gid_t and uid_t
+#undef __block
+
 
 #if OS_API_VERSION(MAC_OS_X_VERSION_10_8, GS_API_LATEST)
 

Tests/base/NSProxy/test00.m

@@ -25,6 +25,7 @@
 - (void) dealloc
 {
   [_remote release];
+  DEALLOC
 }
 - (unichar) characterAtIndex: (NSUInteger)i
 {
@@ -53,6 +54,7 @@
 - (void) dealloc
 {
   [_remote release];
+  DEALLOC
 }
 - (NSUInteger) hash
 {

Tests/base/NSProxy/test01.m

@@ -147,7 +147,7 @@ GSDecimalCompare(NSDecimal left,NSDecimal right)
 - (void) dealloc
 {
   [_remote release];
-  [super dealloc];
+  DEALLOC
 }
 -(void) setRemote:(id)remote
 {