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From: "philipp.koegel at mailbox dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/95562] New: ICE when using noexcept depending on boolean
 template parameter
Date: Sat, 06 Jun 2020 13:19:15 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 10.1.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: philipp.koegel at mailbox dot org
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95562

            Bug ID: 95562
           Summary: ICE when using noexcept depending on boolean template
                    parameter
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: philipp.koegel at mailbox dot org
  Target Milestone: ---

* gcc version: 10.1.0

* system type: x86_64-linux-gnu

* configured with: ../gcc-10.1.0/configure
--prefix=3D/opt/compiler-explorer/gcc-build/staging --build=3Dx86_64-linux-=
gnu
--host=3Dx86_64-linux-gnu --target=3Dx86_64-linux-gnu --disable-bootstrap
--enable-multiarch --with-abi=3Dm64 --with-multilib-list=3Dm32,m64,mx32
--enable-multilib --enable-clocale=3Dgnu --enable-languages=3Dc,c++,fortran=
,ada,d
--enable-ld=3Dyes --enable-gold=3Dyes --enable-libstdcxx-debug
--enable-libstdcxx-time=3Dyes --enable-linker-build-id --enable-lto
--enable-plugins --enable-threads=3Dposix
--with-pkgversion=3DCompiler-Explorer-Build

* The command line that triggers the bug:
g++ -c noexcept_bug.cpp

* Source code that triggers the bug:
template <bool Nothrow>
struct Functions
{
    void (*func)(void*) noexcept(Nothrow);
};

void test()
{
    Functions<true> f{nullptr};
}

* Compiler output:
<source>: In instantiation of 'struct Functions<true>':
<source>:9:21:   required from here
<source>:4:12: internal compiler error: Segmentation fault
    4 |     void (*func)(void*) noexcept(Nothrow);
      |            ^~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.


* Additional notes:
g++ version 9.3 has no issues with the above code.=