Missing exception specification - Rebuild of the Debian archive with clang

"Missing exception specification" build failure(s) — clang 6.0

Package	Version	Supposed error message	Full log
abyss	2.1.0-1	./Histogram.h:315:14: error: 'swap' is missing exception specification 'noexcept(__and_, is_nothrow_move_assignable >::value)'	Log
gwama	2.2.2+dfsg-1	gammaf.cpp:65:8: error: 'gamma' is missing exception specification 'throw()'	Log
libmems	1.6.0+4725-4	../libMems/CompactGappedAlignment.h:811:6: error: 'swap, std::allocator > > > >' is missing exception specification 'noexcept(__and_, allocator > > > >, is_nothrow_move_assignable, allocator > > > > >::value)'	Log
progressivemauve	1.2.0+4713+dfsg-1	CompactGappedAlignment.h:811:6: error: 'swap, std::allocator > > > >' is missing exception specification 'noexcept(__and_, allocator > > > >, is_nothrow_move_assignable, allocator > > > > >::value)'	Log
t-coffee	11.00.8cbe486-6	dp_lib/evaluate_dirichlet.c:543:8: error: 'lgamma_r' is missing exception specification 'throw()'	Log

5 errors