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From: "vopl at bk dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/100825] function signature constraints are not a part of
 mangled name
Date: Sat, 29 May 2021 12:22:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100825

--- Comment #1 from vopl at bk dot ru ---
a little more minimized:

template <class> void foo() {} //1
void useFirst()
{
    foo<int>();// call 1 - instantiate "void foo<int>()"
}

template <class> void foo() requires true {} //2
void useSecond()
{
    foo<int>();// call 2 - instantiate "void foo<int>() requires true"
}

$ g++ -std=3Dc++20 -c b.cpp=20
/tmp/ccnRtmjt.s: Assembler messages:
/tmp/ccnRtmjt.s:59: Error: symbol `_Z3fooIiEvv' is already defined=