re PR fortran/70330 (ICE with -Wextra -Wno-unused-dummy-argument and unused…

re PR fortran/70330 (ICE with -Wextra -Wno-unused-dummy-argument and unused optional dummy argument)

2017-11-04  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/70330
	* gfortran.dg/pr70330.f90: New test.

From-SVN: r254406

gcc/testsuite/ChangeLog

 2017-11-04  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
+	PR fortran/70330
+	* gfortran.dg/pr70330.f90: New test.
+
+2017-11-04  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
 	PR fortran/29600
 	* gfortran.dg/minmaxloc_8.f90: New test.
 

gcc/testsuite/gfortran.dg/pr70330.f90

+! { dg-do compile }
+! { dg-additional-options "-Wall -Wextra -Wno-unused-dummy-argument" }
+! PR fortran/70330 - this used to cause an ICE.
+! Test case by Vladimir Fuka
+function f(o) ! { dg-warning "Return value of function" }
+  optional o
+end function f