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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/105244] [9/10/11/12 Regression] ICE in implicitly_declare_fn, at cp/method.cc:3114 Date: Tue, 19 Apr 2022 13:08:45 +0000 [thread overview] Message-ID: <bug-105244-4-2TG0fuIWDr@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-105244-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105244 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- template <class T> struct S { static T max (); }; template <class A = double> struct V { double a = S<double>::max[0] (); }; template <class T> V<> foo () { return {}; } int main () { V<> b = foo<double> (); } What happens is that synthesized_method_walk with diag = false calls get_nsdmi with tf_none, and much deeper there is pointer_int_sum which has: if (complain && warn_pointer_arith) pedwarn (loc, OPT_Wpointer_arith, "pointer to a function used in arithmetic"); else if (!complain) return error_mark_node; So, if get_nsdmi were called with tf_warning_or_error, we'd pedwarn on it, but we are quite and just return error_mark_node from get_nsdmi in that case. So, we end up with raises = error_mark_node and enter: /* Can happen, e.g., in C++98 mode for an ill-formed non-static data member initializer (c++/89914). Also, in C++98, we might have failed to deduce RAISES, so try again but complain this time. */ if (cxx_dialect < cxx11) synthesized_method_walk (type, kind, const_p, &raises, nullptr, nullptr, nullptr, /*diag=*/true, &inherited_ctor, inherited_parms); /* We should have seen an error at this point. */ gcc_assert (seen_error ()); and ICE, because at this point whether we pedwarn or not depends on -Wpointer-arith, and even if not, pedwarn can warn rather than error etc. Not really sure what to do here, if it is intentional that with tf_none we are stricter and fail even on things we could just warn or pedwarn without -pedantic-errors.
next prev parent reply other threads:[~2022-04-19 13:08 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-12 17:24 [Bug c++/105244] New: " gscfq@t-online.de 2022-04-12 17:41 ` [Bug c++/105244] " mpolacek at gcc dot gnu.org 2022-04-19 13:08 ` jakub at gcc dot gnu.org [this message] 2022-05-27 9:48 ` [Bug c++/105244] [10/11/12/13 " rguenth at gcc dot gnu.org 2022-06-28 10:49 ` jakub at gcc dot gnu.org 2023-07-07 10:43 ` [Bug c++/105244] [11/12/13/14 " rguenth at gcc dot gnu.org
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