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guard on weird index access error in glyph.go:234

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This commit is contained in:
Randall C. O'Reilly 2018-08-30 17:02:03 -06:00
parent 7349a45553
commit 9c0c85f170
1 changed files with 7 additions and 1 deletions
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8
truetype/glyph.go
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@ -6,6 +6,8 @@
package truetype
import (
"fmt"
"golang.org/x/image/font"
"golang.org/x/image/math/fixed"
)
@ -231,7 +233,11 @@ func (g *GlyphBuf) load(recursion uint32, i Index, useMyMetrics bool) (err error
np0, ne0 := len(g.Points), len(g.Ends)
program := g.loadSimple(glyf, ne)
g.addPhantomsAndScale(np0, np0, true, true)
pp1x = g.Points[len(g.Points)-4].X
idx := len(g.Points) - 4
if idx < 0 {
return fmt.Errorf("points out of range error")
}
pp1x = g.Points[idx].X
if g.hinting != font.HintingNone {
if len(program) != 0 {
err := g.hinter.run(