PATCH: Add --size-check=[error|warning]

[Alan Modra]

On Thu, Mar 17, 2011 at 10:26:06AM +1030, Alan Modra wrote:
> Oh, another thing that just occurred to me:  Reporting the .size
> expression symbols is likely not as useful as reporting the function
> symbol, and it's actually a lot easier to report the function..

Like this.

	* config/obj-elf.c (elf_frob_symbol): Report S_SET_SIZE symbol
	on .size expression errors rather than ones in the size expression.

Index: gas/config/obj-elf.c
===================================================================
RCS file: /cvs/src/src/gas/config/obj-elf.c,v
retrieving revision 1.139
diff -u -p -r1.139 obj-elf.c
--- gas/config/obj-elf.c	16 Mar 2011 12:58:26 -0000	1.139
+++ gas/config/obj-elf.c	18 Mar 2011 02:50:30 -0000
@@ -1896,49 +1901,12 @@ elf_frob_symbol (symbolS *symp, int *pun
 	S_SET_SIZE (symp, size->X_add_number);
       else
 	{
-	  const char *op_name = NULL;
-	  const char *add_name = NULL;
-	  PRINTF_LIKE ((*as_error));
-
 	  if (flag_size_check == size_check_error)
-	    as_error = as_bad;
+	    as_bad (_(".size expression for %s "
+		      "does not evaluate to a constant"), S_GET_NAME (symp));
 	  else
-	    as_error = as_warn;
-
-	  if (size->X_op == O_subtract)
-	    {
-	      op_name = S_GET_NAME (size->X_op_symbol);
-	      add_name = S_GET_NAME (size->X_add_symbol);
-	      if (strcmp (op_name, FAKE_LABEL_NAME) == 0)
-		op_name = NULL;
-	      if (strcmp (add_name, FAKE_LABEL_NAME) == 0)
-		add_name = NULL;
-
-	      if (op_name && add_name)
-		as_error (_(".size expression with symbols `%s' and "
-			    "`%s' does not evaluate to a constant"),
-			  op_name, add_name);
-	      else
-		{
-		  const char *name;
-
-		  if (op_name)
-		    name = op_name;
-		  else if (add_name)
-		    name = add_name;
-		  else
-		    name = NULL;
-
-		  if (name)
-		    as_error (_(".size expression with symbol `%s' "
-				"does not evaluate to a constant"),
-			      name);
-		}
-	    }
-	  
-	  if (!op_name && !add_name)
-	    as_error (_(".size expression does not evaluate to a "
-			"constant"));
+	    as_warn (_(".size expression for %s "
+		       "does not evaluate to a constant"), S_GET_NAME (symp));
 	}
       free (sy_obj->size);
       sy_obj->size = NULL;

-- 
Alan Modra
Australia Development Lab, IBM