added assert, as suggested by @behdad in #749

2016-12-02 14:24:46 +01:00 · 2016-12-02 14:24:46 +01:00 · 289fd62d8f
commit 289fd62d8f
parent 6775add8b0
1 changed files with 1 additions and 0 deletions
--- a/Lib/fontTools/varLib/models.py
+++ b/Lib/fontTools/varLib/models.py
@ -44,6 +44,7 @@ def normalizeLocation(location, axes):
 	"""
 	out = {}
 	for tag,(lower,default,upper) in axes.items():
+		assert lower <= default <= upper, "invalid axis values"
 		v = location.get(tag, default)
 		v = max(min(v, upper), lower)
 		if v == default: