[Bug c++/66515] New: g++ segfaults when creating an std::initializer_list

["ulysse.beaugnon at ens dot fr" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66515

            Bug ID: 66515
           Summary: g++ segfaults when creating an std::initializer_list
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ulysse.beaugnon at ens dot fr
  Target Milestone: ---

Created attachment 35764
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35764&action=edit
Preprocessed input triggering the segfault

g++ fails when run on the input attached:

$> g++ -std=c++11 bug_gcc.ii
bug_gcc.cc: In function âint main()â:
bug_gcc.cc:12:49: internal compiler error: Segmentation fault
   std::initializer_list<type_t> v = { { get() } };

Version of GCC:
$> g++ -std=c++11 -v bug_gcc.ii
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc-multilib/src/gcc-5-20150519/configure --prefix=/usr
--libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --enable-multilib --disable-werror
--enable-checking=release --with-default-libstdcxx-abi=c++98
Thread model: posix
gcc version 5.1.0 (GCC) 
COLLECT_GCC_OPTIONS='-std=c++11' '-v' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/cc1plus -fpreprocessed bug_gcc.ii
-quiet -dumpbase bug_gcc.ii -mtune=generic -march=x86-64 -auxbase bug_gcc
-std=c++11 -version -o /tmp/ccg4bTLJ.s
GNU C++11 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
        compiled by GNU C version 5.1.0, GMP version 6.0.0, MPFR version
3.1.2-p11, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++11 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
        compiled by GNU C version 5.1.0, GMP version 6.0.0, MPFR version
3.1.2-p11, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 2502e86cc323bb15ad071f82f9632779