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From: "vpervouchine at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/101872] New: static_cast succeeds in CRTP with incorrect type
Date: Thu, 12 Aug 2021 08:11:54 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101872

            Bug ID: 101872
           Summary: static_cast succeeds in CRTP with incorrect type
           Product: gcc
           Version: 11.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vpervouchine at gmail dot com
  Target Milestone: ---

Created attachment 51296
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51296&action=3Dedit
Preprocessor output. See the actual code from line 11011 onwards

static_cast of *this to an incorrect "Derived" class inside a CRTP base
succeeds when Derived itself is a variadic template, leading to invalid
addressing of member variables of the derived class.
Since the preprocessed file doesn't include comments, please see them in the
source file here: https://godbolt.org/z/oKv1xeK9G=