Make the GCC-4.8 compiler happy by moving declarations to the top of the function.

Modules/_ctypes/libffi_osx/ffi.c

@@ -38,12 +38,13 @@ initialize_aggregate(
 /*@out@*/	ffi_type*	arg)
 {
 /*@-usedef@*/
+	ffi_type**	ptr;
 
 	if (arg == NULL || arg->elements == NULL ||
 		arg->size != 0 || arg->alignment != 0)
 		return FFI_BAD_TYPEDEF;
 
-	ffi_type**	ptr = &(arg->elements[0]);
+    ptr = &(arg->elements[0]);
 
 	while ((*ptr) != NULL)
 	{
@@ -135,16 +136,16 @@ ffi_prep_cif(
 /*@dependent@*/ /*@out@*/ /*@partial@*/ ffi_type*	rtype, 
 /*@dependent@*/			ffi_type**		atypes)
 {
+	unsigned int	bytes	= 0;
+	unsigned int	i;
+	ffi_type**		ptr;
+
 	if (cif == NULL)
 		return FFI_BAD_TYPEDEF;
 
 	if (abi <= FFI_FIRST_ABI || abi > FFI_DEFAULT_ABI)
 		return FFI_BAD_ABI;
 
-	unsigned int	bytes	= 0;
-	unsigned int	i;
-	ffi_type**		ptr;
-
 	cif->abi = abi;
 	cif->arg_types = atypes;
 	cif->nargs = nargs;

Modules/_ctypes/libffi_osx/x86/x86-ffi64.c

@@ -225,14 +225,16 @@ classify_argument(
 			/* Merge the fields of structure.  */
 			for (ptr = type->elements; *ptr != NULL; ptr++)
 			{
+				int num, pos;
+
 				byte_offset = ALIGN(byte_offset, (*ptr)->alignment);
 
-				int	num = classify_argument(*ptr, subclasses, byte_offset % 8);
+				num = classify_argument(*ptr, subclasses, byte_offset % 8);
 
 				if (num == 0)
 					return 0;
 
-				int pos = byte_offset / 8;
+				pos = byte_offset / 8;
 
 				for (i = 0; i < num; i++)
 				{
@@ -589,11 +591,12 @@ ffi_prep_closure(
 	void			(*fun)(ffi_cif*, void*, void**, void*),
 	void*			user_data)
 {
+		volatile unsigned short*	tramp;
+
 	if (cif->abi != FFI_UNIX64)
 		return FFI_BAD_ABI;
 
-	volatile unsigned short*	tramp =
-		(volatile unsigned short*)&closure->tramp[0];
+	tramp = (volatile unsigned short*)&closure->tramp[0];
 
 	tramp[0] = 0xbb49;		/* mov <code>, %r11	*/
 	*(void* volatile*)&tramp[1] = ffi_closure_unix64;