Epsilon: Crash when manipulating 9x9 matrixes with big decimal numbers

Created on 13 Sep 2018 · 3Comments · Source: numworks/epsilon

I was working on multiple linear regression and I accidentally calculated a 9x9 matrix instead of a scalar. A few operations later, my calculator crashed and rebooted (at least it made me notice my mistake :smile:)

Here are the steps to reproduce a similar crash:

[[1,2,3,4,5,6,7,8,9]] -> M0
transpose(M0)M0 -> M1
M1 + π·100000 -> M2
M2 - 123456.789

The online simulator doesn't seem to be affected, maybe it's a memory issue?

Source

TheElectronWill

👍1

Most helpful comment

Thanks for reporting this issue. The crash was due to a dynamic allocation failure, the heap seemed to be full. We just changed the way we store mathematical expressions and memory exhaustion now triggers a pop-up. However, we might want to increase the memory provided...

EmilieNumworks on 21 Sep 2018

👍2

All 3 comments

Couldn't make it crash on the desktop simulator either (building on master), despite strict flags and ASAN, so yeah maybe hardware specific

adriweb on 13 Sep 2018

EmilieNumworks on 21 Sep 2018

👍2

Thanks for reporting this issue. The crash was due to a dynamic allocation failure, the heap seemed to be full. We just changed the way we store mathematical expressions and memory exhaustion now triggers a pop-up. However, we might want to increase the memory provided...

Fixed