re PR fortran/67429 (Missing part of error messages.)

2015-09-04  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR fortran/67429
	* error.c (gfc_clear_pp_buffer): Reset last_location, otherwise
	caret lines might be skipped when actually giving a diagnostic.

From-SVN: r227500

gcc/fortran/ChangeLog

+2015-09-04  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+	PR fortran/67429
+	* error.c (gfc_clear_pp_buffer): Reset last_location, otherwise
+	caret lines might be skipped when actually giving a diagnostic.
+
 2015-08-31  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
 
 	PR fortran/54833

gcc/fortran/error.c

@@ -757,6 +757,9 @@ gfc_clear_pp_buffer (output_buffer *this_buffer)
   pp->buffer = this_buffer;
   pp_clear_output_area (pp);
   pp->buffer = tmp_buffer;
+  /* We need to reset last_location, otherwise we may skip caret lines
+     when we actually give a diagnostic.  */
+  global_dc->last_location = UNKNOWN_LOCATION;
 }