parsers: fix width of datalen variable in fm1readmarkers
Because parsers.c does not define PY_SSIZE_T_CLEAN, "s#" format requires
(const char*, int), not (const char*, Py_ssize_t).
https://docs.python.org/2/c-api/arg.html
This error had no problem before 042344313939, where datalen wasn't used.
But now fm1readmarkers() fails with "overflow in obsstore" on Python 2.6.9
(amd64) because upper bits of datalen seem to be filled with 1, making it
a negative integer.
This problem seems not visible on our Python 2.7 environment because upper
bits happen to be filled with 0.
prepare repo
$ hg init a
$ cd a
$ echo "some text" > FOO.txt
$ echo "another text" > bar.txt
$ echo "more text" > QUICK.txt
$ hg add
adding FOO.txt
adding QUICK.txt
adding bar.txt
$ hg ci -mtest1
verify
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 1 changesets, 3 total revisions
verify with journal
$ touch .hg/store/journal
$ hg verify
abandoned transaction found - run hg recover
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 1 changesets, 3 total revisions
$ rm .hg/store/journal
introduce some bugs in repo
$ cd .hg/store/data
$ mv _f_o_o.txt.i X_f_o_o.txt.i
$ mv bar.txt.i xbar.txt.i
$ rm _q_u_i_c_k.txt.i
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
warning: revlog 'data/FOO.txt.i' not in fncache!
0: empty or missing FOO.txt
FOO.txt@0: f62022d3d590 in manifests not found
warning: revlog 'data/QUICK.txt.i' not in fncache!
0: empty or missing QUICK.txt
QUICK.txt@0: 88b857db8eba in manifests not found
warning: revlog 'data/bar.txt.i' not in fncache!
0: empty or missing bar.txt
bar.txt@0: 256559129457 in manifests not found
3 files, 1 changesets, 0 total revisions
3 warnings encountered!
hint: run "hg debugrebuildfncache" to recover from corrupt fncache
6 integrity errors encountered!
(first damaged changeset appears to be 0)
[1]
$ cd ../../..
$ cd ..
test changelog without a manifest
$ hg init b
$ cd b
$ hg branch foo
marked working directory as branch foo
(branches are permanent and global, did you want a bookmark?)
$ hg ci -m branchfoo
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
0 files, 1 changesets, 0 total revisions
test revlog corruption
$ touch a
$ hg add a
$ hg ci -m a
$ echo 'corrupted' > b
$ dd if=.hg/store/data/a.i of=start bs=1 count=20 2>/dev/null
$ cat start b > .hg/store/data/a.i
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
a@1: broken revlog! (index data/a.i is corrupted)
warning: orphan revlog 'data/a.i'
1 files, 2 changesets, 0 total revisions
1 warnings encountered!
1 integrity errors encountered!
(first damaged changeset appears to be 1)
[1]
$ cd ..
test revlog format 0
$ revlog-formatv0.py
$ cd formatv0
$ hg verify
repository uses revlog format 0
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions
$ cd ..