provide safe exit for runaway intersections

provide safe exit for runaway intersections

Curve intersections with extreme numbers may
cause the intersection template code to loop
forever. Detect this by looking for
marking more spans gone than exist, and
return without any intersections found.

TBR=reed@google.com
BUG=643855
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2310113002

Committed: https://skia.googlesource.com/skia/+/ef7cee4bbc7c4c1c21b00834de7119634a3c35c9

[caryclark, 2016-09-06 15:34:30]

Description was changed from

==========
provide safe exit for runaway intersections

Curve intersections with extreme numbers may
cause the intersection template code to loop
forever. Detect this by looking for
marking more spans gone than exist, and
return without any intersections found.

TBR=reed@google.com
BUG=643855
==========

to

==========
provide safe exit for runaway intersections

Curve intersections with extreme numbers may
cause the intersection template code to loop
forever. Detect this by looking for
marking more spans gone than exist, and
return without any intersections found.

TBR=reed@google.com
BUG=643855
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2310113002
==========

[caryclark, 2016-09-06 15:39:32]

The CQ bit was checked by caryclark@google.com

[commit-bot: I haz the power, 2016-09-06 15:39:38]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-06 16:05:56]

Description was changed from

==========
provide safe exit for runaway intersections

Curve intersections with extreme numbers may
cause the intersection template code to loop
forever. Detect this by looking for
marking more spans gone than exist, and
return without any intersections found.

TBR=reed@google.com
BUG=643855
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2310113002
==========

to

==========
provide safe exit for runaway intersections

Curve intersections with extreme numbers may
cause the intersection template code to loop
forever. Detect this by looking for
marking more spans gone than exist, and
return without any intersections found.

TBR=reed@google.com
BUG=643855
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2310113002

Committed:
https://skia.googlesource.com/skia/+/ef7cee4bbc7c4c1c21b00834de7119634a3c35c9
==========

[commit-bot: I haz the power, 2016-09-06 16:05:57]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/ef7cee4bbc7c4c1c21b00834de7119634a3c35c9