tracebak.c (i386 alternative): Remove useless comparaison which is always false...

    gcc/ada/
	* tracebak.c (i386 alternative): Remove useless comparaison
	which is always false; LOWEST_ADDRESS is 0 and is never greater
	than an unsigned integer.

From-SVN: r129964

gcc/ada/ChangeLog

@@ -18,6 +18,10 @@
 	(elaboration code): Timer_Queue lifetime is the one of the
 	package.
 
+	* tracebak.c (i386 alternative): Remove useless comparaison
+	which is always false; LOWEST_ADDRESS is 0 and is never greater
+	than an unsigned integer.
+
 2007-11-07  Olivier Hainque  <hainque@adacore.com>
 
 	* decl.c (make_aligning_type): Set the mode of the RECORD_TYPE we

gcc/ada/tracebak.c

@@ -308,7 +308,6 @@ struct layout
   void *return_address;
 };
 
-#define LOWEST_ADDR 0
 #define FRAME_LEVEL 1
 /* builtin_frame_address (1) is expected to work on this target, and (0) might
    return the soft stack pointer, which does not designate a location where a
@@ -318,7 +317,6 @@ struct layout
 #define PC_ADJUST -2
 #define STOP_FRAME(CURRENT, TOP_STACK) \
   (IS_BAD_PTR((long)(CURRENT)->return_address) \
-   || (unsigned int)(CURRENT)->return_address < LOWEST_ADDR \
    || (CURRENT)->return_address == 0|| (CURRENT)->next == 0  \
    || (void *) (CURRENT) < (TOP_STACK))