[Bug c++/71393] New: [6.1 Regression] Compilation hang

[terra at gnome dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71393

            Bug ID: 71393
           Summary: [6.1 Regression] Compilation hang
           Product: gcc
           Version: 6.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: terra at gnome dot org
  Target Milestone: ---

Created attachment 38630
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38630&action=edit
MyClass.C

g++ -fsanitize=undefined -Wall -c -g -O2 MyClass.C
[hangs]

This didn't happen in 5.3


Using built-in specs.
COLLECT_GCC=/usr/local/products/gcc/6.1.0/bin/g++
COLLECT_LTO_WRAPPER=/usr/local/products/gcc/6.1.0/lib/gcc/x86_64-suse-linux/6.1.0/lto-wrapper
Target: x86_64-suse-linux
Configured with: ../../gcc-6.1.0/configure --enable-languages=c,c++,fortran
--enable-targets=x86_64-suse-linux,i686-suse-linux
--prefix=/usr/local/products/gcc/6.1.0 --with-gnu-as
--with-as=/usr/local/products/gcc/binutils-2.26/bin/as --with-gnu-ld
--with-ld=/usr/local/products/gcc/binutils-2.26/bin/ld.bfd
--with-gmp=/usr/local/products/gcc/gmp-6.1.0
--with-mpfr=/usr/local/products/gcc/mpfr-3.1.4
--with-mpc=/usr/local/products/gcc/mpc-1.0.3 --enable-threads=posix
--enable-shared --enable-__cxa_atexit --enable-libstdcxx-allocator=pool
x86_64-suse-linux
Thread model: posix
gcc version 6.1.0 (GCC)