Segmentation fault in large image & creation of large segmentation image

[Bovornpratch]

Hi,

I am using sextractor for some large mosaic images (a few MegaPx^2 size) and sometimes during the analysis phase (before writing that catalog), sextractor crashes with a segmentation fault.

I found that increasing the MEMORY BUFSIZE, MEMORY OBJSTACK, and MEMORY PIXSTACK seems to resolve the issue in some cases. However, I am curious what is the actual reason in which causes this crash and how to avoid it.

I addition, I am curious how to produce the large check images without triggering a seg fault?