WIP for Clang test.
log.linux64Clang50DPInt32Opt.PASS.gz (LLVM-5.0.2) //
log.linux64GccDPInt32Opt.PASS.gz (GCC 7.4.1)
Integration of the Foundation bug-fix to v1812-dev due to an external request.
The bug-fix is already present in dev via 6e8f0dbe. but in fixed version #1617 (closed)