re PR fortran/77583 (ICE in pp_quoted_string, at pretty-print.c:966)

2019-03-03  Harald Anlauf  <anlauf@gmx.de>
	    Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77583
	* symbol.c (check_conflict): Check for valid procedure name
	passed to error reporting routine.

	PR fortran/77583
	* gfortran.dg/pr77583.f90: New test.


Co-Authored-By: Steven G. Kargl <kargl@gcc.gnu.org>

From-SVN: r269353

gcc/fortran/ChangeLog

+2019-03-03  Harald Anlauf  <anlauf@gmx.de>
+	    Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/77583
+	* symbol.c (check_conflict): Check for valid procedure name
+	passed to error reporting routine.
+
 2019-03-03  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/72714

gcc/fortran/symbol.c

@@ -525,7 +525,7 @@ check_conflict (symbol_attribute *attr, const char *name, locus *where)
   /* The copying of procedure dummy arguments for module procedures in
      a submodule occur whilst the current state is COMP_CONTAINS. It
      is necessary, therefore, to let this through.  */
-  if (attr->dummy
+  if (name && attr->dummy
       && (attr->function || attr->subroutine)
       && gfc_current_state () == COMP_CONTAINS
       && !(gfc_new_block && gfc_new_block->abr_modproc_decl))

gcc/testsuite/ChangeLog

+2019-03-03  Harald Anlauf  <anlauf@gmx.de>
+
+	PR fortran/77583
+	* gfortran.dg/pr77583.f90: New test.
+
 2019-03-03  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/72714

gcc/testsuite/gfortran.dg/pr77583.f90

+! { dg-do compile }
+!
+! PR fortran/77583 - ICE in pp_quoted_string, at pretty-print.c:966
+! Contributed by Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de>
+
+pure subroutine sub(s)
+contains
+   pure subroutine s  ! { dg-error "conflicts with DUMMY argument" }
+   end
+end