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From: "barry.revzin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/109715] New: abi_tag attribute is not applied to variable
 templates
Date: Wed, 03 May 2023 14:20:15 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 12.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109715

            Bug ID: 109715
           Summary: abi_tag attribute is not applied to variable templates
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: barry.revzin at gmail dot com
  Target Milestone: ---

Given:

template <class T>
[[gnu::abi_tag("ABI")]] inline int value =3D 0;

int get() {
    return value<int>;
}

gcc mangles the variable value<int> as _Z5valueIiE, instead of
_Z5valueB3ABIIiE. That is, there is no "[abi:ABI]" tag.

clang does propagate this attribute as expected.

gcc does include the abi_tag in the mangling in other template cases (static
data member of a class template, static local variable of a function templa=
te,
etc.)

This is a related (but, I'm guessing, much easier) problem to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D88061.=