PR c++/88222 - ICE with bit-field with invalid type.

	* decl.c (grokdeclarator): Check if declarator is null.

	* g++.dg/ext/flexary31.C: New test.

From-SVN: r266581

gcc/cp/ChangeLog

+2018-11-28  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/88222 - ICE with bit-field with invalid type.
+	* decl.c (grokdeclarator): Check if declarator is null.
+
 2018-11-28  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/87476

gcc/cp/decl.c

@@ -12221,7 +12221,7 @@ grokdeclarator (const cp_declarator *declarator,
 		if (in_system_header_at (input_location))
 		  /* Do not warn on flexible array members in system
 		     headers because glibc uses them.  */;
-		else if (name)
+		else if (name && declarator)
 		  pedwarn (declarator->id_loc, OPT_Wpedantic,
 			   "ISO C++ forbids flexible array member %qs", name);
 		else

gcc/testsuite/ChangeLog

+2018-11-28  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/88222 - ICE with bit-field with invalid type.
+	* g++.dg/ext/flexary31.C: New test.
+
 2018-11-28  David Edelsohn  <dje.gcc@gmail.com>
 
 	* g++.dg/debug/dwarf2/pr86900.C: XFAIL AIX.

gcc/testsuite/g++.dg/ext/flexary31.C

+// PR c++/88222
+// { dg-options -Wno-pedantic }
+
+typedef char a[];
+
+class S {
+  a : 4; // { dg-error "bit-field" }
+};