Bug 18589

Summary:	cmp(1) chokes on large files
Product:	Base System	Reporter:	Poul-Henning Kamp <phk>
Component:	bin	Assignee:	Mike Heffner <mikeh>
Status:	Closed FIXED
Severity:	Affects Only Me
Priority:	Normal
Version:	Unspecified
Hardware:	Any
OS:	Any

Description Poul-Henning Kamp freebsd_committer

2000-05-16 09:40:03 UTC

The cmp(1) program mmaps the files to be compared.  This fails for large files.

Fix: 

Add a loop around the mmap/compare operation which operates on some moderate amount of data each iteration.
How-To-Repeat: cmp -l file.1 file.2  where the two files are 3242115072 bytes long

Comment 1 Mike Heffner freebsd_committer

2001-06-16 21:07:11 UTC

Responsible Changed
From-To: freebsd-bugs->mikeh

Add another one to the todo list. I'm working on some patches for 
this anyways.

Comment 2 dwmalone freebsd_committer

2001-11-04 21:34:47 UTC

State Changed
From-To: open->closed

Closed in favour of PR 24732, which has patches which have been committed 
to -current.