Sanity check line numbers for non-negative value.
commitda8e87d6505fb33ed131144a33af88c6d0dc96fd
authorSadrul Habib Chowdhury <sadrul@users.sourceforge.net>
Wed, 3 Mar 2010 16:18:55 +0000 (3 11:18 -0500)
committerSadrul Habib Chowdhury <sadrul@users.sourceforge.net>
Wed, 3 Mar 2010 16:18:55 +0000 (3 11:18 -0500)
tree2ff18481123c272c71e53dd502b48acbefdb3b74
parent48624f98db28bd8c117cf1aebfc2cd326f6243bc
Sanity check line numbers for non-negative value.

It looks like 'ys' can be negative at times, which results in invalid
memory reads, and possibly writes. Valgrind log from Friedrich Delgado
Friedrichs in savannah bug #29050.
src/layer.c