MATLAB crashes when I type "clear all" at the prompt

If I type

>> clear all

at the prompt nothing bad happens, but after I run my script, typing

>> clear all

crashes matlab.

[Francois]

typing

>> clear

also crashes matlab

[Francois]

The issue is with one particularly big variable. It's a sructure with a bunch of variables taking up lots of memory. If I try to clear that one big variable. Matlab crashes.

par 1x1 5239121589 struct

It doesn't seem like a particularly big variable.

[Steven Lord]

What's in the struct array? I suspect you have a user-defined object that has a bug in its destructor and/or you created an array stored in the struct using a MEX-file and the MEX-file has a bug.

[Francois]

Sounds very pausible because I was saving some of the output from Matlab's 'decomposition' in the par struct. I'm unsure what the internal structure of the 'decomposition' type is.

However, after posting this question, I managed to create a small enough reproducible example so that I can post a crash report to Mathworks. Hopefully they can fix the problem in future versions.