The newly added diagnostic causes an ICE because the new grokdeclarator call
returned error_mark_node and DECL_SOURCE_LOCATION crashes on that. So don't
attempt to print the new diagnostic if we've encountered something not
resembling a bit-field.
Bootstrapped/regtested on x86_64-linux, ok for trunk?
2019-11-18 Marek Polacek <polacek@redhat.com>
PR c++/92450 - ICE with invalid nested name specifier.
* parser.c (cp_parser_member_declaration): Bail out for invalid code.
* g++.dg/parse/crash71.C: New test.
diff --git gcc/cp/parser.c gcc/cp/parser.c
index c473e7fd92f..caed6946977 100644
--- gcc/cp/parser.c
+++ gcc/cp/parser.c
@@ -25052,6 +25052,9 @@ cp_parser_member_declaration (cp_parser* parser)
tree d = grokdeclarator (declarator, &decl_specifiers,
BITFIELD, /*initialized=*/false,
&attributes);
+ /* Hopelessly invalid code, give up. */
+ if (error_operand_p (d))
+ goto out;
error_at (DECL_SOURCE_LOCATION (d),
"bit-field %qD has non-integral type %qT",
d, TREE_TYPE (d));