https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103480
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|-Werror=useless-cast with |[10/11/12 Regression]
|constexpr destructor |-Werror=useless-cast with
| |constexpr destructor
Target Milestone|--- |10.4
Priority|P3 |P2
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r10-6527:
commit aaa26bf496a646778ac861aed124d960b5bf549f
Author: Jason Merrill <ja...@redhat.com>
Date: Sun Jan 26 22:58:32 2020 -0500
c++: Use constexpr to avoid wrong -Wsign-compare (PR90691).
We would like to do constexpr evaluation to avoid false positives on
warnings, but constexpr evaluation can involve function body copying that
changes DECL_UID, which breaks -fcompare-debug. So let's remember
that we need to avoid that.
PR c++/90691
* expr.c (fold_for_warn): Call maybe_constant_value.
* constexpr.c (struct constexpr_ctx): Add uid_sensitive field.
(maybe_constant_value): Add uid_sensitive parm.
(get_fundef_copy): Don't copy if it's true.
(cxx_eval_call_expression): Don't instantiate if it's true.
(cxx_eval_outermost_constant_expr): Likewise.
