https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108200
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- And I've just added a few more at r13-4856-gf99b94865fa629 FAIL: 20_util/duration/io.cc (test for excess errors) UNRESOLVED: 20_util/duration/io.cc compilation failed to produce executable FAIL: std/time/clock/file/io.cc (test for excess errors) UNRESOLVED: std/time/clock/file/io.cc compilation failed to produce executable FAIL: std/time/clock/gps/io.cc (test for excess errors) UNRESOLVED: std/time/clock/gps/io.cc compilation failed to produce executable FAIL: std/time/clock/system/io.cc (test for excess errors) UNRESOLVED: std/time/clock/system/io.cc compilation failed to produce executable FAIL: std/time/clock/tai/io.cc (test for excess errors) UNRESOLVED: std/time/clock/tai/io.cc compilation failed to produce executable FAIL: std/time/clock/utc/io.cc (test for excess errors) UNRESOLVED: std/time/clock/utc/io.cc compilation failed to produce executable FAIL: std/time/format.cc (test for excess errors) UNRESOLVED: std/time/format.cc compilation failed to produce executable FAIL: std/time/hh_mm_ss/io.cc (test for excess errors) UNRESOLVED: std/time/hh_mm_ss/io.cc compilation failed to produce executable