[MC-15036] Riding horses into obstacles crashes the game

Just walking mounted on a horse and unexpected walked againt a tree.. (sorry for my bad english)

What I expected to happen was...:
Stop the horse.

What actually happened was...:
The game Crashed

Steps to Reproduce:
1. mount on a horse
2. let him walk for his maxium speed
3. walk to a low tree against the trunk

Linked issues

is duplicated by 3

MC-15028 Game crash when horse hits cactus Resolved

MC-15032 Ridding horse crashes minecraft Resolved

MC-15050 Internal server error SMP while on horse Resolved

Attachments

crash-2013-05-02_18.45.01-client.txt

Comments 4

Tails 2013-05-02T17:11:56Z

Please do not mark issues as private, unless your bug report is a security issue containing information that may compromise your server/client.

Tails 2013-05-02T17:12:59Z

Confirmed.

Tails 2013-05-02T17:14:08Z

Note:

Description: Ticking entity

java.lang.NullPointerException
	at qq.a(SourceFile:321)
	at nk.x(SourceFile:160)
	at nl.x(SourceFile:132)
	at ms.k_(SourceFile:272)

Marf 2013-05-02T17:16:12Z

oh sorry. when I opened world, I suddenly had two horses instead of one. with the same color and had both wearing a saddle. (sorry for my bad english)