[multiple changes]

2013-07-08  Robert Dewar  <dewar@adacore.com>

	* rtsfind.adb: Minor comment fix.

2013-07-08  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch4.adb (Check_Ghost_Subprogram_Call): Do not check the placement
	of a Ghost function call when the enclosing context is being
	preanalyzed.

2013-07-08  Ed Schonberg  <schonberg@adacore.com>

	* exp_ch6.adb (Expand_Inlined_Call, Process_Formals): If the
	expression in a return statement is a numeric literal, qualify
	it with the return type for proper resolution.

From-SVN: r200772

4 files changed, 47 insertions, 10 deletions

diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index ac3876e..b508915 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,5 +1,21 @@
 2013-07-08  Robert Dewar  <dewar@adacore.com>
 
+	* rtsfind.adb: Minor comment fix.
+
+2013-07-08  Hristian Kirtchev  <kirtchev@adacore.com>
+
+	* sem_ch4.adb (Check_Ghost_Subprogram_Call): Do not check the placement
+	of a Ghost function call when the enclosing context is being
+	preanalyzed.
+
+2013-07-08  Ed Schonberg  <schonberg@adacore.com>
+
+	* exp_ch6.adb (Expand_Inlined_Call, Process_Formals): If the
+	expression in a return statement is a numeric literal, qualify
+	it with the return type for proper resolution.
+
+2013-07-08  Robert Dewar  <dewar@adacore.com>
+
 	* sem.ads: Minor comment updates.
 	* s-restri.ads, exp_ch6.adb, lib-load.ads, exp_ch3.adb, sem_ch10.adb:
 	Minor reformatting.
diff --git a/gcc/ada/exp_ch6.adb b/gcc/ada/exp_ch6.adb
index d944ac9..d48544f 100644
--- a/gcc/ada/exp_ch6.adb
+++ b/gcc/ada/exp_ch6.adb
@@ -4680,7 +4680,8 @@ package body Exp_Ch6 is
 
       function Process_Formals (N : Node_Id) return Traverse_Result;
       --  Replace occurrence of a formal with the corresponding actual, or the
-      --  thunk generated for it.
+      --  thunk generated for it. Replace a return statement with an assignment
+      --  to the target of the call, with appropriate conversions if needed.
 
       function Process_Sloc (Nod : Node_Id) return Traverse_Result;
       --  If the call being expanded is that of an internal subprogram, set the
@@ -4808,9 +4809,14 @@ package body Exp_Ch6 is
                --  errors, e.g. when the expression is a numeric literal and
                --  the context is private. If the expression is an aggregate,
                --  use a qualified expression, because an aggregate is not a
-               --  legal argument of a conversion.
+               --  legal argument of a conversion. Ditto for numeric literals,
+               --  which must be resolved to a specific type.
 
-               if Nkind_In (Expression (N), N_Aggregate, N_Null) then
+               if Nkind_In (Expression (N), N_Aggregate,
+                                            N_Null,
+                                            N_Real_Literal,
+                                            N_Integer_Literal)
+               then
                   Ret :=
                     Make_Qualified_Expression (Sloc (N),
                       Subtype_Mark => New_Occurrence_Of (Ret_Type, Sloc (N)),
diff --git a/gcc/ada/rtsfind.adb b/gcc/ada/rtsfind.adb
index ecd1cd6..22abb9a 100644
--- a/gcc/ada/rtsfind.adb
+++ b/gcc/ada/rtsfind.adb
@@ -839,8 +839,8 @@ package body Rtsfind is
          return;
       end if;
 
-      --  Add the with_clause, if not already in the context of the current
-      --  compilation unit.
+      --  Add the with_clause, if we have not already added an implicit with
+      --  for this unit to the current compilation unit.
 
       declare
          LibUnit : constant Node_Id := Unit (Cunit (U.Unum));
diff --git a/gcc/ada/sem_ch4.adb b/gcc/ada/sem_ch4.adb
index 3931957..a03c465 100644
--- a/gcc/ada/sem_ch4.adb
+++ b/gcc/ada/sem_ch4.adb
@@ -881,12 +881,24 @@ package body Sem_Ch4 is
          S : Entity_Id;
 
       begin
+         --  Do not perform the check while preanalyzing the enclosing context
+         --  because the call is not in its final place. Premature attempts to
+         --  verify the placement lead to bogus errors.
+
+         if In_Spec_Expression then
+            return;
+
          --  The ghost subprogram appears inside an assertion expression
+         --  which is one of the allowed cases.
 
-         if In_Assertion_Expression (N) then
+         elsif In_Assertion_Expression (N) then
             return;
 
+         --  Otherwise see if it inside another ghost subprogram
+
          else
+            --  Loop to climb scopes
+
             S := Current_Scope;
             while Present (S) and then S /= Standard_Standard loop
 
@@ -898,11 +910,14 @@ package body Sem_Ch4 is
 
                S := Scope (S);
             end loop;
-         end if;
 
-         Error_Msg_N
-           ("call to ghost subprogram must appear in assertion expression or "
-            & "another ghost subprogram", N);
+            --  If we fall through the loop it was not within another
+            --  ghost subprogram, so we have bad placement.
+
+            Error_Msg_N
+              ("call to ghost subprogram must appear in assertion expression "
+               & "or another ghost subprogram", N);
+         end if;
       end Check_Ghost_Subprogram_Call;
 
       --------------------------------------------------