re PR fortran/19936 (confused error message about implied do loop)

 PR 19936
* primary.c (match_complex_constant): Mangled complex constant may
be an implied do-loop.  Give implied do-loop matcher a chance.

From-SVN: r95951

gcc/fortran/ChangeLog

+2005-03-05  Steven G. Kargl  <kargls@comcast.net>
+
+	PR 19936
+	* primary.c (match_complex_constant): Mangled complex constant may
+	be an implied do-loop.  Give implied do-loop matcher a chance.
+
+
 2005-03-05  Steven G. Kargl  <kargls@comcast.net> 
 
 	PR fortran/19754

gcc/fortran/primary.c

@@ -1074,7 +1074,17 @@ match_complex_constant (gfc_expr ** result)
 
   m = gfc_match_char (')');
   if (m == MATCH_NO)
+    {
+      /* Give the matcher for implied do-loops a chance to run.  This
+	 yields a much saner error message for (/ (i, 4=i, 6) /).  */
+      if (gfc_peek_char () == '=')
+	{
+	  m = MATCH_ERROR;
+	  goto cleanup;
+	}
+      else
     goto syntax;
+    }
 
   if (m == MATCH_ERROR)
     goto cleanup;