If the second argument of __builtin_speculation_safe_value is
error_mark_node (or has such a type), we ICE during
useless_typ_conversion_p.
202-05-07 Jakub Jelinek <jakub@redhat.com>
PR c/94968
* c-common.c (speculation_safe_value_resolve_params): Return false if
error_operand_p (val2).
(resolve_overloaded_builtin) <case BUILT_IN_SPECULATION_SAFE_VALUE_N>:
Remove extraneous semicolon.
* gcc.dg/pr94968.c: New test.
