Fixed crash on FLIP vs. invalid variable names.
authorJohn Darrington <john@darrington.wattle.id.au>
Wed, 6 Apr 2016 07:38:56 +0000 (09:38 +0200)
committerJohn Darrington <john@darrington.wattle.id.au>
Wed, 6 Apr 2016 07:38:56 +0000 (09:38 +0200)
commitedcc44c873fcd39364d654ab53553960a7be0d29
treefb5e48f9b746a0cc5d2c46f6fb5968425b48944e
parent7741e39c8dd2ca7b6a5c68c7af74ca0507690644
Fixed crash on FLIP vs. invalid variable names.

FLIP would crash if the designated new names were not
valid names.  For example "TO", "BY", "" etc.

Found by zzuf.
src/language/stats/flip.c
tests/language/stats/flip.at