Xcode 6.1 "EXC_BAD_ACCESS" with ofxBulletSimpleExample and others about ofxbullet HOT 3 CLOSED

Better fix:
Michael Dewberry has solved this already in his forked repo: 57a1025

My old advice, before I found Michael Dewberry's fix, is below:

I ran into this problem too using:
OF 0.8.4, XCode 6.1, Mac OSX 10.10 (Yosemite)

I googled as well and came across this issue on the old Bullet google code home: https://code.google.com/p/bullet/issues/detail?id=697

They discuss that "16 byte aligning the glm matrix" solved their problems. Also, erwin.coumans says:

You either align the data, or disable all SSE and suffer some performance.
SSE requires alignment, it is a hardware requirement. It is only necessary in a few cases.

Looking through the btMatrix3x3.h code to make sure that we are using ATTRIBUTE_ALIGNED16, I noticed up the top that we have a preprocessor #ifdef that will change the ATTRIBUTE_ALIGNED16 depending on if BT_USE_SSE is defined or not.

So I tracked that down via a grep to addons/ofxBullet/libs/bullet2.8.1/include/LinearMath/btScalar.h.

Now this is probably a place we shouldn't be messing without knowing exactly what's going on— but I've managed to fix this error by commenting out #define BT_USE_SSE and #define BT_USE_SSE_IN_API.

I don't know what SSE is, but from browsing the code I think that without SSE, Bullet will use NEON instead.

Now erwin.coumans in the quote above said that "if we disable all SSE we will suffer some performance". So maybe this is a temporary fix …

Hope this helps you + others!

from ofxbullet.

nice, works a treat.

from ofxbullet.

+1 works great. Thanks!

from ofxbullet.