From: Ed Schonberg <schonberg@adacore.com>
Date: Thu, 11 Apr 2013 13:38:22 +0000 (+0000)
Subject: sem_prag.adb (Analyze_Pragma, [...]): pre-analyze expression with type Any_Priority.
X-Git-Tag: releases/gcc-4.9.0~6506
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6188f4bd60ffffedbc1d1d0f5e79610dc2b34779;p=thirdparty%2Fgcc.git

sem_prag.adb (Analyze_Pragma, [...]): pre-analyze expression with type Any_Priority.

2013-04-11  Ed Schonberg  <schonberg@adacore.com>

	* sem_prag.adb (Analyze_Pragma, case Priority): pre-analyze
	expression with type Any_Priority.
	* exp_ch9.adb (Initialize_Protection): Check that the value
	of the priority expression is within the bounds of the proper
	priority type.

From-SVN: r197799
---

diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 5451d7c82e28..a691ec2168d2 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,11 @@
+2013-04-11  Ed Schonberg  <schonberg@adacore.com>
+
+	* sem_prag.adb (Analyze_Pragma, case Priority): pre-analyze
+	expression with type Any_Priority.
+	* exp_ch9.adb (Initialize_Protection): Check that the value
+	of the priority expression is within the bounds of the proper
+	priority type.
+
 2013-04-11  Robert Dewar  <dewar@adacore.com>
 
 	* sem_prag.adb, prj-env.adb: Minor reformatting.
diff --git a/gcc/ada/exp_ch9.adb b/gcc/ada/exp_ch9.adb
index 49e7efeba6e9..f292b96f69ef 100644
--- a/gcc/ada/exp_ch9.adb
+++ b/gcc/ada/exp_ch9.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1992-2012, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2013, 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- --
@@ -13388,6 +13388,7 @@ package body Exp_Ch9 is
       Args        : List_Id;
       L           : constant List_Id := New_List;
       Has_Entry   : constant Boolean := Has_Entries (Ptyp);
+      Prio_Type   : Entity_Id;
       Restricted  : constant Boolean := Restricted_Profile;
 
    begin
@@ -13456,18 +13457,37 @@ package body Exp_Ch9 is
                     Expression
                      (First (Pragma_Argument_Associations (Prio_Clause)));
 
+                  --  Get_Rep_Item returns either priority pragma.
+
+                  if Pragma_Name (Prio_Clause) = Name_Priority then
+                     Prio_Type := RTE (RE_Any_Priority);
+                  else
+                     Prio_Type := RTE (RE_Interrupt_Priority);
+                  end if;
+
                --  Attribute definition clause Priority
 
                else
+                  if Chars (Prio_Clause) = Name_Priority then
+                     Prio_Type := RTE (RE_Any_Priority);
+                  else
+                     Prio_Type := RTE (RE_Interrupt_Priority);
+                  end if;
+
                   Prio := Expression (Prio_Clause);
                end if;
 
                --  If priority is a static expression, then we can duplicate it
                --  with no problem and simply append it to the argument list.
+               --  However, it has only be pre-analyzed, so we need to check
+               --  now that it is in the bounds of the priority type.
 
                if Is_Static_Expression (Prio) then
+                  Set_Analyzed (Prio, False);
                   Append_To (Args,
-                    Duplicate_Subexpr_No_Checks (Prio));
+                    Make_Type_Conversion (Loc,
+                      Subtype_Mark => New_Occurrence_Of (Prio_Type, Loc),
+                      Expression   => Duplicate_Subexpr (Prio)));
 
                --  Otherwise, the priority may be a per-object expression, if
                --  it depends on a discriminant of the type. In this case,
@@ -13477,18 +13497,13 @@ package body Exp_Ch9 is
                --  appropriate approach, but that could generate declarations
                --  improperly placed in the enclosing scope.
 
-               --  Note: Use System.Any_Priority as the expected type for the
-               --  non-static priority expression, in case the expression has
-               --  not been analyzed yet (as occurs for example with pragma
-               --  Interrupt_Priority).
-
                else
                   Temp := Make_Temporary (Loc, 'R', Prio);
                   Append_To (L,
                      Make_Object_Declaration (Loc,
                         Defining_Identifier => Temp,
                         Object_Definition   =>
-                          New_Occurrence_Of (RTE (RE_Any_Priority), Loc),
+                          New_Occurrence_Of (Prio_Type,  Loc),
                         Expression          => Relocate_Node (Prio)));
 
                   Append_To (Args, New_Occurrence_Of (Temp, Loc));
diff --git a/gcc/ada/sem_prag.adb b/gcc/ada/sem_prag.adb
index c31056cdd602..1d233e026b7e 100644
--- a/gcc/ada/sem_prag.adb
+++ b/gcc/ada/sem_prag.adb
@@ -14521,7 +14521,7 @@ package body Sem_Prag is
                --  described in "Handling of Default and Per-Object
                --  Expressions" in sem.ads.
 
-               Preanalyze_Spec_Expression (Arg, Standard_Integer);
+               Preanalyze_Spec_Expression (Arg, RTE (RE_Any_Priority));
 
                if not Is_Static_Expression (Arg) then
                   Check_Restriction (Static_Priorities, Arg);