Memory debuggin in Julia

chat.txt

Yichao:
1. no need to edit any code
2. compile it with `WITH_GC_DEBUG_ENV` make variable
this should enable detection of 4 envs
and turn on gc verifier
(so the gc will be much slower even without any env set)
the three I used the most often are `JULIA_GC_ALLOC_PRINT=0:10 JULIA_GC_ALLOC_OTHER=r0:1000 JULIA_GC_ALLOC_POOL=r0:1000`
(not the default val, just whatever copied from my cmdline history)

Andreas:
so just something like `cd src;make clean;make WITH_GC_DEBUG_ENV=1` should do it?

Yichao:
right
format is, "r"(optional, randomize interval when specified)
and `start[:step[:end]]`
step default to 1
end default to max int