[MacPorts] #51469: gcc6 @6.1.0_0 Internal compiler error: in fold_binary_loc

[MacPorts]

#51469: gcc6 @6.1.0_0 Internal compiler error: in fold_binary_loc
------------------------+--------------------------------
 Reporter:  macports@…  |      Owner:  macports-tickets@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:              |       Port:  gcc6
------------------------+--------------------------------
 Attempting to compile the attached file, using a C++14 constexpr function,
 with g++-mp-6 results in

 {{{
 consterr.cpp: In function 'int main()':
 consterr.cpp:29:34:   in constexpr expansion of 'operator*<int, 3,
 2>(x2p1, xm1)'
 consterr.cpp:29:34: internal compiler error: in fold_binary_loc, at fold-
 const.c:9252
      constexpr auto prod = x2p1 * xm1;
                                   ^~~

 consterr.cpp:29:34: internal compiler error: Abort trap: 6
 g++-mp-6: internal compiler error: Abort trap: 6 (program cc1plus)
 Please submit a full bug report,
 with preprocessed source if appropriate.
 See <https://trac.macports.org/newticket> for instructions.
 }}}

 It compiles succesfully with clang++ (`Apple LLVM version 7.3.0
 (clang-703.0.31)`).
 I am on OS X El Capitan, 10.11.4, with Xcode 7.3.1 installed.

-- 
Ticket URL: <https://trac.macports.org/ticket/51469>
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