[Bug c++/98545] [11 Regression] ICE in write_expression, at cp/mangle.c:3352
cvs-commit at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Fri Jan 22 18:02:56 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98545
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Marek Polacek <mpolacek@gcc.gnu.org>:
https://gcc.gnu.org/g:25fc4d01a8ed1888e6a65597a3387349eb3c950c
commit r11-6864-g25fc4d01a8ed1888e6a65597a3387349eb3c950c
Author: Marek Polacek <polacek@redhat.com>
Date: Wed Jan 13 16:33:39 2021 -0500
c++: ICE when mangling operator name [PR98545]
r11-6301 added some asserts in mangle.c, and now we trip over one of
them. In particular, it's the one asserting that we didn't get
IDENTIFIER_ANY_OP_P when mangling an expression with a dependent name.
As this testcase shows, it's possible to get that, so turn the assert
into an if and write "on". That changes the mangling in the following
way:
With this patch:
$ c++filt _ZN1i1hIJ1adS1_EEEDTcldtdefpTonclspcvT__EEEDpS2_
decltype (((*this).(operator()))((a)(), (double)(), (a)())) i::h<a, double,
a>(a, double, a)
G++10:
$ c++filt _ZN1i1hIJ1adS1_EEEDTcldtdefpTclspcvT__EEEDpS2_
decltype (((*this).(operator()))((a)(), (double)(), (a)())) i::h<a, double,
a>(a, double, a)
clang++/icc:
$ c++filt _ZN1i1hIJ1adS1_EEEDTclonclspcvT__EEEDpS2_
decltype ((operator())((a)(), (double)(), (a)())) i::h<a, double, a>(a,
double, a)
This is now tracked in PR98756.
gcc/cp/ChangeLog:
PR c++/98545
* mangle.c (write_member_name): Emit
abi_warn_or_compat_version_crosses
warnings regardless of abi_version_at_least.
(write_expression): When the expression is a dependent name
and an operator name, write "on" before writing its name.
gcc/ChangeLog:
PR c++/98545
* doc/invoke.texi: Update C++ ABI Version 15 description.
gcc/testsuite/ChangeLog:
PR c++/98545
* g++.dg/abi/mangle76.C: New test.
More information about the Gcc-bugs
mailing list