https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104739
--- Comment #6 from Iain Buclaw <ibuclaw at gdcproject dot org> --- (In reply to r...@cebitec.uni-bielefeld.de from comment #5) > > --- Comment #4 from Rainer Orth <ro at gcc dot gnu.org> --- > > I wonder how to handle this: while DejaGnu has an ucn effective-target > > keyword, > > the gdc.test testsuite doesn't use those at all. > > What I think could be done is > > * Add "//UTF-8 chars" comments to testmodule.d and ufcs.d; mangle.d > already has one. > > * Make gdc-utils.exp (gdc-convert-test) check for those annotations, > adding > > // { dg-require-effective-target ucn} > > if found. > > The new annotations would have to go upstream, I believe. WDYT? Can give it a go. https://github.com/dlang/dmd/pull/16136