unwind-dw2-fde.h (last_fde): Use "(const fde *)" instead of "(char *)" to avoid…

unwind-dw2-fde.h (last_fde): Use "(const fde *)" instead of "(char *)" to avoid qualifier warning by 'xgcc'...

 	* unwind-dw2-fde.h (last_fde): Use "(const fde *)" instead of
 	"(char *)" to avoid qualifier warning by 'xgcc' compiling.

From-SVN: r220004

libgcc/ChangeLog

+2015-01-22  Chen Gang  <gang.chen.5i5j@gmail.com>
+
+	* unwind-dw2-fde.h (last_fde): Use "(const fde *)" instead of
+	"(char *)" to avoid qualifier warning by 'xgcc' compiling.
+
 2015-01-20  Chung-Lin Tang  <cltang@codesourcery.com>
 
 	* config/nios2/linux-unwind.h (nios2_fallback_frame_state):

libgcc/unwind-dw2-fde.h

@@ -169,7 +169,7 @@ static inline int
 last_fde (struct object *obj __attribute__ ((__unused__)), const fde *f)
 {
 #ifdef DWARF2_OBJECT_END_PTR_EXTENSION
-  return (char *)f == obj->fde_end || f->length == 0;
+  return f == (const fde *) obj->fde_end || f->length == 0;
 #else
   return f->length == 0;
 #endif