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From: "ppalka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/91292] Mangler incorrectly handles negative numbers in expressions
Date: Fri, 24 Sep 2021 16:11:21 +0000	[thread overview]
Message-ID: <bug-91292-4-awVWe5qNn9@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-91292-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91292

--- Comment #4 from Patrick Palka <ppalka at gcc dot gnu.org> ---
And if -(1) is to be mangled the same as -1, then shouldn't

  template<typename T>
  typename std::enable_if<(int)sizeof(T) >= -(1), int>::type size1(T *t);

  template<typename T>
  typename std::enable_if<(int)sizeof(T) >= -1, int>::type size1(T *t);

be considered two declarations of the same function?  But IIUC that would
contradict [temp.over.link]p5, which says

  Two expressions involving template parameters are considered equivalent if
two function definitions containing the expressions would satisfy the
one-definition rule

but IIUC the one-definition rule fails here because -1 is not the same
(token-wise) as -(1).

  parent reply	other threads:[~2021-09-24 16:11 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-91292-4@http.gcc.gnu.org/bugzilla/>
2021-09-24 15:55 ` ppalka at gcc dot gnu.org
2021-09-24 16:11 ` ppalka at gcc dot gnu.org [this message]
2021-09-24 16:13 ` ppalka at gcc dot gnu.org
2021-09-24 16:36 ` cvs-commit at gcc dot gnu.org
2021-09-24 21:03 ` richard-gccbugzilla at metafoo dot co.uk
2021-09-27 13:50 ` ppalka at gcc dot gnu.org
2021-10-06 14:15 ` cvs-commit at gcc dot gnu.org

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