re PR fortran/91650 (ICE in gfc_conv_constant_to_tree, at fortran/trans-const.c:370)

2019-09-04  Steven G. Kargl  <kargl@gcvc.gnu.org>

	PR fortran/91650
	* io.c (match_io_element):  An output IO list item cannot be a BOZ.

2019-09-04  Steven G. Kargl  <kargl@gcvc.gnu.org>

	PR fortran/91650
	* gfortran.dg/pr91650_1.f90: New test.
	* gfortran.dg/pr91650_2.f90: Ditto.

From-SVN: r275391

gcc/fortran/ChangeLog

+2019-09-04  Steven G. Kargl  <kargl@gcvc.gnu.org>
+
+	PR fortran/91650
+	* io.c (match_io_element):  An output IO list item cannot be a BOZ.
+
 2019-09-03  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	* gfortran.texi: Update documentation to catch up with BOZ changes.

gcc/fortran/io.c

@@ -3675,6 +3675,15 @@ match_io_element (io_kind k, gfc_code **cpp)
       if (m == MATCH_NO)
 	gfc_error ("Expected expression in %s statement at %C",
 		   io_kind_name (k));
+
+      if (m == MATCH_YES && expr->ts.type == BT_BOZ)
+	{
+	  if (gfc_invalid_boz ("BOZ literal constant at %L cannot appear in "
+				"an output IO list", &gfc_current_locus))
+	    return MATCH_ERROR;
+	  if (!gfc_boz2int (expr, gfc_max_integer_kind))
+	    return MATCH_ERROR;
+	};
     }
 
   if (m == MATCH_YES && k == M_READ && gfc_check_do_variable (expr->symtree))

gcc/testsuite/ChangeLog

+2019-09-04  Steven G. Kargl  <kargl@gcvc.gnu.org>
+
+	PR fortran/91650
+	* gfortran.dg/pr91650_1.f90: New test.
+	* gfortran.dg/pr91650_2.f90: Ditto.
+
 2019-09-04  Marek Polacek  <polacek@redhat.com>
 
 	* g++.dg/cpp0x/initlist-deduce.C: Don't use -fdeduce-init-list.  Remove

gcc/testsuite/gfortran.dg/pr91650_1.f90

+! { dg-do compile }
+! PR fortran/91650
+! Code contributed by Gerhard Steinmetz.
+program p
+   print *, b'10110' ! { dg-error "cannot appear in an output IO list" }
+   print *, o'10110' ! { dg-error "cannot appear in an output IO list" }
+   print *, z'10110' ! { dg-error "cannot appear in an output IO list" }
+end

gcc/testsuite/gfortran.dg/pr91650_2.f90

+! { dg-do compile }
+! { dg-options "-fallow-invalid-boz" }
+! PR fortran/91650
+! Code contributed by Gerhard Steinmetz.
+program p
+   character(len=60) str
+   write(str,*) b'10110' ! { dg-warning "cannot appear in an output IO list" }
+   if (trim(adjustl(str)) /= '22') stop 1
+   write(str,*) o'10110' ! { dg-warning "cannot appear in an output IO list" }
+   if (trim(adjustl(str)) /= '4168') stop 2
+   write(str,*) z'10110' ! { dg-warning "cannot appear in an output IO list" }
+   if (trim(adjustl(str)) /= '65808') stop 3
+end