Does heapinspect work for a core file ?

[jqguo367]

Using gdb with heapinspect plugin, I got the following error:
(gdb) hi heap
Python Exception <class 'FileNotFoundError'> [Errno 2] No such file or directory: '/proc/1251943/exe':
Error occurred in Python command: [Errno 2] No such file or directory: '/proc/1251943/exe'

If it does work for a core file, how to inspect heap for a core file ?