doc/bugs/v7_unlock_big_file__58___out_of_memory.mdwn

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+### Please describe the problem.
+
+In v7 repos unlocking files larger then RAM, causes out of memory error on subsequent commands.
+
+### What steps will reproduce the problem?
+
+Just create new repository, add big file, unlock it, try to run `git annex status`. See full actions list below.
+
+### What version of git-annex are you using? On what operating system?
+
+Tested on:
+
+- 7.20181206-gc4b6115f7
+- 7.20181212-g7d51b0c10
+
+### Please provide any additional information below.
+
+[[!format sh """
+
+$ git --version
+git version 2.20.1
+
+$ git annex version
+git-annex version: 7.20181212-g7d51b0c10
+build flags: Assistant Webapp Pairing S3(multipartupload)(storageclasses) WebDAV Inotify DBus DesktopNotify TorrentParser MagicMime Feeds Testsuite
+dependency versions: aws-0.20 bloomfilter-2.0.1.0 cryptonite-0.25 DAV-1.3.3 feed-1.0.0.0 ghc-8.4.4 http-client-0.5.13.1 persistent-sqlite-2.8.2 torrent-10000.1.1 uuid-1.3.13 yesod-1.6.0
+key/value backends: SHA256E SHA256 SHA512E SHA512 SHA224E SHA224 SHA384E SHA384 SHA3_256E SHA3_256 SHA3_512E SHA3_512 SHA3_224E SHA3_224 SHA3_384E SHA3_384 SKEIN256E SKEIN256 SKEIN512E SKEIN512 BLAKE2B256E BLAKE2B256 BLAKE2B512E BLAKE2B512 BLAKE2B160E BLAKE2B160 BLAKE2B224E BLAKE2B224 BLAKE2B384E BLAKE2B384 BLAKE2S256E BLAKE2S256 BLAKE2S160E BLAKE2S160 BLAKE2S224E BLAKE2S224 BLAKE2SP256E BLAKE2SP256 BLAKE2SP224E BLAKE2SP224 SHA1E SHA1 MD5E MD5 WORM URL
+remote types: git gcrypt p2p S3 bup directory rsync web bittorrent webdav adb tahoe glacier ddar hook external
+operating system: linux x86_64
+supported repository versions: 5 7
+upgrade supported from repository versions: 0 1 2 3 4 5 6
+
+$ git init
+Initialized empty Git repository in /home/user/Temp/Annex/bug/.git/
+
+$ git annex init --version=7
+init  ok
+(recording state in git...)
+
+$ ls -lh
+total 16G
+-rw-r--r-- 1 user user 16G Jan  9 23:00 big-file
+
+$ git annex status
+? big-file
+
+$ git annex add
+add big-file ok
+(recording state in git...)
+
+$ git annex status
+A big-file
+
+$ git annex sync
+commit 
+[master (root-commit) ef57173] git-annex in user@user-thinkpad:~/Temp/Annex/bug
+ 1 file changed, 1 insertion(+)
+ create mode 120000 big-file
+ok
+
+$ git annex status
+
+$ git status
+On branch master
+nothing to commit, working tree clean
+
+$ git annex unlock big-file
+unlock big-file ok
+(recording state in git...)
+
+$ git annex status
+fatal: Out of memory, realloc failed
+git-annex: git status failed
+git-annex: status: 1 failed
+
+$ git status
+fatal: Out of memory, realloc failed
+
+"""]]
+
+### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)
+
+
+Git Annex is unique piece of Art, there is nothing like it.