[Ada] Fix inconsistent quoting in messages about compile-time errors

gcc/ada/

	* exp_ch4.adb (Raise_Accessibility_Error): Move exception name
	to the message string; move << control characters to the end,
	for consistency.
	* sem_ch6.adb (Analyze_Function_Return): Likewise.
	* sem_util.adb (Compile_Time_Constraint_Error): Likewise.
	* gcc-interface/decl.c (gnat_to_gnu_entity): Remove quotes
	around Storage_Error.
	* gcc-interface/trans.c (gnat_to_gnu): Remove quotes around
	Constraint_Error.

gcc/testsuite/

	* gnat.dg/aggr26.adb: Update expected error message.

5 files changed, 13 insertions, 14 deletions

diff --git a/gcc/ada/exp_ch4.adb b/gcc/ada/exp_ch4.adb
index bf96e64..262e40e 100644
--- a/gcc/ada/exp_ch4.adb
+++ b/gcc/ada/exp_ch4.adb
@@ -11885,8 +11885,8 @@ package body Exp_Ch4 is
              Reason => PE_Accessibility_Check_Failed));
          Set_Etype (N, Target_Type);
 
-         Error_Msg_N ("<<accessibility check failure", N);
-         Error_Msg_NE ("\<<& [", N, Standard_Program_Error);
+         Error_Msg_N ("accessibility check failure<<", N);
+         Error_Msg_N ("\Program_Error [<<", N);
       end Raise_Accessibility_Error;
 
       ----------------------
diff --git a/gcc/ada/gcc-interface/decl.c b/gcc/ada/gcc-interface/decl.c
index af6b6bd..8c0703a 100644
--- a/gcc/ada/gcc-interface/decl.c
+++ b/gcc/ada/gcc-interface/decl.c
@@ -1400,7 +1400,7 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, bool definition)
 
 		if (TREE_CODE (TYPE_SIZE_UNIT (gnu_alloc_type)) == INTEGER_CST
 		    && !valid_constant_size_p (TYPE_SIZE_UNIT (gnu_alloc_type)))
-		  post_error ("??`Storage_Error` will be raised at run time!",
+		  post_error ("??Storage_Error will be raised at run time!",
 			      gnat_entity);
 
 		gnu_expr
diff --git a/gcc/ada/gcc-interface/trans.c b/gcc/ada/gcc-interface/trans.c
index 3d0820f..f767cc6 100644
--- a/gcc/ada/gcc-interface/trans.c
+++ b/gcc/ada/gcc-interface/trans.c
@@ -8300,7 +8300,7 @@ gnat_to_gnu (Node_Id gnat_node)
   /* If the result is a constant that overflowed, raise Constraint_Error.  */
   if (TREE_CODE (gnu_result) == INTEGER_CST && TREE_OVERFLOW (gnu_result))
     {
-      post_error ("??`Constraint_Error` will be raised at run time", gnat_node);
+      post_error ("??Constraint_Error will be raised at run time", gnat_node);
       gnu_result
 	= build1 (NULL_EXPR, gnu_result_type,
 		  build_call_raise (CE_Overflow_Check_Failed, gnat_node,
diff --git a/gcc/ada/sem_ch6.adb b/gcc/ada/sem_ch6.adb
index bd1bb50..5bfbca8 100644
--- a/gcc/ada/sem_ch6.adb
+++ b/gcc/ada/sem_ch6.adb
@@ -1684,7 +1684,7 @@ package body Sem_Ch6 is
 
                Error_Msg_Warn := SPARK_Mode /= On;
                Error_Msg_N ("cannot return a local value by reference<<", N);
-               Error_Msg_NE ("\& [<<", N, Standard_Program_Error);
+               Error_Msg_N ("\Program_Error [<<", N);
             end if;
          end if;
 
diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 2e2ac24..88181ab 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -6707,24 +6707,23 @@ package body Sem_Util is
                      if Present (Conc_Typ)
                        and then not Comes_From_Source (Conc_Typ)
                      then
-                        Error_Msg_NEL
-                          ("\& [<<", N, Standard_Constraint_Error, Eloc);
+                        Error_Msg ("\& [<<", Eloc, N);
 
                      else
                         if GNATprove_Mode then
-                           Error_Msg_NEL
-                             ("\& would have been raised for objects of this "
-                              & "type", N, Standard_Constraint_Error, Eloc);
+                           Error_Msg
+                             ("\Constraint_Error would have been raised"
+                              & " for objects of this type", Eloc, N);
                         else
-                           Error_Msg_NEL
-                             ("\& will be raised for objects of this type??",
-                              N, Standard_Constraint_Error, Eloc);
+                           Error_Msg
+                             ("\Constraint_Error will be raised"
+                              & " for objects of this type??", Eloc, N);
                         end if;
                      end if;
                   end;
 
                else
-                  Error_Msg_NEL ("\& [<<", N, Standard_Constraint_Error, Eloc);
+                  Error_Msg ("\Constraint_Error [<<", Eloc, N);
                end if;
 
             else