[Bug libstdc++/67011] division by zero in std::exponential_distribution

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67011

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Although if you're still seeing a problem with std::exponential_distribution
then I guess it's not the same bug.

(Please ignore tr1/random.h unless you're actually using
std::tr1::exponential_distribution ... and if you are using that, you should
consider not using it :-)