This patch gives better error recovery and message for a ** b ** c 1. package ParenExp is 2. a : Integer := 2 ** 3 ** 4; | >>> parenthesization required for **
3. end; Tested on x86_64-pc-linux-gnu, committed on trunk 2012-03-19 Robert Dewar <de...@adacore.com> * par-ch4.adb (Check_Bad_Exp): New procedure
Index: par-ch4.adb =================================================================== --- par-ch4.adb (revision 185520) +++ par-ch4.adb (working copy) @@ -6,7 +6,7 @@ -- -- -- B o d y -- -- -- --- Copyright (C) 1992-2011, Free Software Foundation, Inc. -- +-- Copyright (C) 1992-2012, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- @@ -81,6 +81,9 @@ -- Called to place complaint about bad range attribute at the given -- source location. Terminates by raising Error_Resync. + procedure Check_Bad_Exp; + -- Called after scanning a**b, posts error if ** detected + procedure P_Membership_Test (N : Node_Id); -- N is the node for a N_In or N_Not_In node whose right operand has not -- yet been processed. It is called just after scanning out the IN keyword. @@ -107,6 +110,20 @@ Resync_Expression; end Bad_Range_Attribute; + ------------------- + -- Check_Bad_Exp -- + ------------------- + + procedure Check_Bad_Exp is + begin + if Token = Tok_Double_Asterisk then + Error_Msg_SC ("parenthesization required for '*'*"); + Scan; -- past ** + Discard_Junk_Node (P_Primary); + Check_Bad_Exp; + end if; + end Check_Bad_Exp; + -------------------------- -- 4.1 Name (also 6.4) -- -------------------------- @@ -1933,6 +1950,7 @@ Scan; -- past ** Set_Left_Opnd (Node2, Node1); Set_Right_Opnd (Node2, P_Primary); + Check_Bad_Exp; Node1 := Node2; end if; @@ -2320,6 +2338,7 @@ Scan; -- past ** Set_Left_Opnd (Node2, Node1); Set_Right_Opnd (Node2, P_Primary); + Check_Bad_Exp; return Node2; else return Node1;