re PR fortran/86281 (SEGV in fortran/resolve.c:resolve_function)

2018-06-22  Paul Thomas  <pault@gcc.gnu.org>
	    Rainer Orth  <ro@gcc.gnu.org>

	PR fortran/86281
	* resolve.c (resolve_contained_fntype): Check for the charlen
	before testing the length.

2018-06-22  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/86281
	* gfortran.dg/assumed_charlen_function_7.f90: Add -std=legacy.


Co-Authored-By: Rainer Orth <ro@gcc.gnu.org>

From-SVN: r261975

gcc/fortran/ChangeLog

+2018-06-22  Paul Thomas  <pault@gcc.gnu.org>
+	    Rainer Orth  <ro@gcc.gnu.org>
+
+	PR fortran/86281
+	* resolve.c (resolve_contained_fntype): Check for the charlen
+	before testing the length.
+
 2018-06-21  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/49630

gcc/fortran/resolve.c

@@ -3116,6 +3116,7 @@ resolve_function (gfc_expr *expr)
   /* If this is a deferred TBP with an abstract interface, its result
      cannot be an assumed length character (F2003: C418).  */
   if (sym && sym->attr.abstract && sym->attr.function
+      && sym->result->ts.u.cl
       && sym->result->ts.u.cl->length == NULL)
     {
       gfc_error ("ABSTRACT INTERFACE %qs at %L must not have an assumed "

gcc/testsuite/ChangeLog

+2018-06-22  Paul Thomas  <pault@gcc.gnu.org>
+
+	PR fortran/86281
+	* gfortran.dg/assumed_charlen_function_7.f90: Add -std=legacy.
+
 2018-06-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>
 
 	* gcc.target/powerpc/builtins-3-p8.c (test_pack_float): Remove

gcc/testsuite/gfortran.dg/assumed_charlen_function_7.f90

 ! { dg-do compile }
+! { dg-options "-std=legacy" }
 !
 ! Test the fix for PR49630, comment #11.
 !