re PR fortran/84394 (compiler error when using modules with derived types in block data subprograms)

2019-03-16  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84394
	* symbol.c (gfc_add_subroutine): If we are encountering a
	subrtoutine within a BLOCK DATA and the name starts with an
	underscore, do not check.

2019-03-16  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84394
	* gfortran.dg/blockdata_11.f90: New test.

From-SVN: r269721