[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 Jonathan Wakely changed: What|Removed |Added Target Milestone|--- |10.0
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 Jonathan Wakely changed: What|Removed |Added CC||mattreecebentley at gmail dot com --- Comment #8 from Jonathan Wakely --- *** Bug 100956 has been marked as a duplicate of this bug. ***
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 Marek Polacek changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #7 from Marek Polacek --- Fixed.
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 --- Comment #6 from Marek Polacek --- Author: mpolacek Date: Wed Aug 28 02:22:29 2019 New Revision: 274982 URL: https://gcc.gnu.org/viewcvs?rev=274982=gcc=rev Log: PR c++/81676 - bogus -Wunused warnings in constexpr if. * semantics.c (maybe_mark_exp_read_r): New function. (finish_if_stmt): Call it on THEN_CLAUSE and ELSE_CLAUSE. * g++.dg/cpp1z/constexpr-if31.C: New test. * g++.dg/cpp1z/constexpr-if32.C: New test. Added: trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-if31.C trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-if32.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/semantics.c trunk/gcc/testsuite/ChangeLog
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 Marek Polacek changed: What|Removed |Added Keywords||patch --- Comment #5 from Marek Polacek --- Well, patch posted: https://gcc.gnu.org/ml/gcc-patches/2019-08/msg01196.html I'm not very optimistic about it being accepted, but so far no one has submitted anything better.
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 --- Comment #4 from Marek Polacek --- The problem seems to be that we're losing DECL_READ_P on the parm_decl v.
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676
Vittorio Romeo changed:
What|Removed |Added
CC||vittorio.romeo at outlook dot
com
--- Comment #3 from Vittorio Romeo ---
Found this today, still present in gcc trunk (9.2+). Example:
int main()
{
auto f = [](auto a, auto b) {
if constexpr (sizeof(b) == 1) {
return a;
} else {
return b;
}
};
return f(1, 1) + f(1, 'a');
}
https://gcc.godbolt.org/z/SOvLEV
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 --- Comment #2 from Benjamin Buch --- Does still exist in: $ g++ --version g++ (GCC) 8.0.0 20171201 (experimental) Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[Bug c++/81676] Wrong warning with unused-but-set-parameter within 'if constexpr'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81676 Marek Polacek changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2017-08-03 CC||mpolacek at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Marek Polacek --- Confirmed.
