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List:       gcc-bugs
Subject:    [Bug c++/60366] New: ICE with self-invoking lambdas
From:       "jengelh at inai dot de" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2014-02-28 15:18:10
Message-ID: bug-60366-4 () http ! gcc ! gnu ! org/bugzilla/
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60366

            Bug ID: 60366
           Summary: ICE with self-invoking lambdas
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jengelh at inai dot de

This not-so-serious code:

$ cat w.cpp 
int main(int argc, const char **argv)
{
        auto f = [](const struct __lambda0 &self) { self(self); };
        f(f);
        return 0;
}

causes an ICE instead of just exiting(1):

$ g++ w.cpp -std=gnu++11 -o w -ggdb3 -Wall
w.cpp: In lambda function:
w.cpp:3:55: error: use of ‘main(int, const char**)::__lambda0' before deduction
of ‘auto'
  auto f = [](const struct __lambda0 &self) { self(self); };
                                                       ^
w.cpp:3:55: error: invalid use of ‘auto'
g++: internal compiler error: Segmentation fault (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.opensuse.org/> for instructions.

$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.8/lto-wrapper
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,java,ada
--enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.8
--enable-ssp --disable-libssp --disable-plugin
--with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux'
--disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib
--enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch
--enable-version-specific-runtime-libs --enable-linker-build-id
--enable-linux-futex --program-suffix=-4.8 --without-system-libunwind
--with-arch-32=i586 --with-tune=generic --build=x86_64-suse-linux
--host=x86_64-suse-linux
Thread model: posix
gcc version 4.8.2 20140225 [gcc-4_8-branch revision 208119] (SUSE Linux) 

$ g++-4.9 w.cpp -std=gnu++11 -o w -ggdb3 -Wall
g++-4.9: internal compiler error: Segmentation fault (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.opensuse.org/> for instructions.

$ g++-4.9 -v
Using built-in specs.
COLLECT_GCC=g++-4.9
COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.9/lto-wrapper
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,java,ada,go --enable-checking=yes
--with-gxx-include-dir=/usr/include/c++/4.9 --enable-ssp --disable-libssp
--disable-libvtv --disable-plugin --with-bugurl=http://bugs.opensuse.org/
--with-pkgversion='SUSE Linux' --disable-libgcj --with-slibdir=/lib64
--with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new
--disable-libstdcxx-pch --enable-version-specific-runtime-libs
--enable-linker-build-id --enable-linux-futex --program-suffix=-4.9
--without-system-libunwind --enable-multilib --with-arch-32=i586
--with-tune=generic --build=x86_64-suse-linux --host=x86_64-suse-linux
Thread model: posix
gcc version 4.9.0 20140226 (experimental) [trunk revision 208172] (SUSE Linux)=
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