1 new GCC HEAD@138503 regression

[Geoff Keating]

Arnaud Charlet <charlet@adacore.com> writes:

> FWIW, changes in the ada directory cannot possibly be the cause of a failure
> in libstdc++ or gcc.dg

There seem to be two libstdc++ tests that fail randomly.

>> With your recent patch, GCC HEAD revision 138503 had problems on:
>> native: regress-21 (1 NEW failures)
>> The previous build was of revision 138484.