PR d/90650
d/dmd: Merge upstream dmd ab03e2918

Fixes internal compiler error in fold_convert_loc.

Reviewed-on: https://github.com/dlang/dmd/pull/9996

gcc/testsuite/ChangeLog:

2019-06-16  Iain Buclaw  <ibuclaw@gdcproject.org>

	PR d/90650
	* gdc.dg/pr90650a.d: New test.
	* gdc.dg/pr90650b.d: New test.

From-SVN: r272344