fontforge/fontforge — pull request #144 by mskala (2012-09-30 16:05:38+00:00)
Title: Fix some crashes and infinite loops in spline geometry

This fixes a couple of infinite loops and null pointer dereferences arising for numerical issues in spline geometry: "find intersections" will search for t-values that are out of range (crashing or looping forever) and "add extrema" assumes you can divide a positive number by 2.0 an unlimited number of times without it ending up at exactly zero, which is not in fact the case in limited-precision arithmetic.