https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108530
--- Comment #2 from seurer at gcc dot gnu.org --- Yes it is a regular file. With the previous commit it wasn't UNSUPPORTED and worked just fine: g:ff6c7617102df365918402c6ccc8e497c47dbe60, r13-5167-gff6c7617102df3 make -k check RUNTESTFLAGS="conformance.exp=std/time/tzdb/1.cc" # of expected passes 2 This is quite an old system (it's soon to be retired) and I don't see the issue elsewhere.