[Bug libstdc++/52169] the ifstream readsome() method does not signal any bit on eof.

[tom at kera dot name]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52169

--- Comment #2 from Tomalak Geret'kal <tom at kera dot name> 2012-02-08 
10:45:17 UTC ---
Are you sure it's not just that in_avail is 0? Why should it be -1 here?

i.e. doesn't readsome become a noop when there's nothing to read?