sem_prag.adb (Analyze_Pragma): Do not output the characters of an illegal…

sem_prag.adb (Analyze_Pragma): Do not output the characters of an illegal argument as it may not have...

2012-11-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_prag.adb (Analyze_Pragma): Do not
	output the characters of an illegal argument as it may not have
	characters to begin with.

2012-11-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_prag.adb (Expand_Pragma_Loop_Assertion):
	Change the order of argument processing to avoid disappearing
	increase / decrease expressions.

From-SVN: r193212

gcc/ada/ChangeLog

 2012-11-06  Hristian Kirtchev  <kirtchev@adacore.com>
 
+	* sem_prag.adb (Analyze_Pragma): Do not
+	output the characters of an illegal argument as it may not have
+	characters to begin with.
+
+2012-11-06  Hristian Kirtchev  <kirtchev@adacore.com>
+
+	* exp_prag.adb (Expand_Pragma_Loop_Assertion):
+	Change the order of argument processing to avoid disappearing
+	increase / decrease expressions.
+
+2012-11-06  Hristian Kirtchev  <kirtchev@adacore.com>
+
 	* exp_prag.adb: Add with and use clause for Sem_Ch8.
 	(Expand_N_Pragma): Add a new variant to expand pragma Loop_Assertion.
 	(Expand_Pragma_Loop_Assertion): New routine.

gcc/ada/exp_prag.adb

@@ -1076,10 +1076,12 @@ package body Exp_Prag is
 
       Arg := First (Args);
       while Present (Arg) loop
-         if No (Invar) or else Chars (Arg) = Name_Invariant then
-            Invar := Expression (Arg);
-         else
+         if Chars (Arg) = Name_Increases
+           or else Chars (Arg) = Name_Decreases
+         then
             Process_Increase_Decrease (Arg, Is_Last => Arg = Last_Arg);
+         else
+            Invar := Expression (Arg);
          end if;
 
          Next (Arg);
@@ -1088,12 +1090,14 @@ package body Exp_Prag is
       --  Verify the invariant expression, generate:
       --    pragma Assert (<Invar>);
 
-      Insert_Action (N,
-        Make_Pragma (Loc,
-          Chars                        => Name_Assert,
-          Pragma_Argument_Associations => New_List (
-            Make_Pragma_Argument_Association (Loc,
-              Expression => Relocate_Node (Invar)))));
+      if Present (Invar) then
+         Insert_Action (N,
+           Make_Pragma (Loc,
+             Chars                        => Name_Assert,
+             Pragma_Argument_Associations => New_List (
+               Make_Pragma_Argument_Association (Loc,
+                 Expression => Relocate_Node (Invar)))));
+      end if;
 
       --  Construct the segment which stores the old values of all expressions.
       --  Generate:

gcc/ada/sem_prag.adb

@@ -11335,8 +11335,12 @@ package body Sem_Prag is
                --  relocated during expansion and analyzed in their new
                --  context.
 
-               if Chars (Arg) = Name_Invariant or else Arg_Count = 1 then
-
+               if Chars (Arg) = Name_Invariant
+                 or else
+                   (Arg_Count = 1
+                      and then Chars (Arg) /= Name_Increases
+                      and then Chars (Arg) /= Name_Decreases)
+               then
                   --  Only one invariant is allowed in the pragma
 
                   if Seen then
@@ -11355,7 +11359,7 @@ package body Sem_Prag is
                --  Illegal argument
 
                else
-                  Error_Pragma_Arg ("argument & not allowed in pragma %", Arg);
+                  Error_Pragma_Arg ("argument not allowed in pragma %", Arg);
                end if;
 
                Next (Arg);