% init repo1

% add a; ci

adding a

% cat .hg/store/fncache

data/a.i

% add a.i/b; ci

adding a.i/b

% cat .hg/store/fncache

data/a.i

data/a.i.hg/b.i

% add a.i.hg/c; ci

adding a.i.hg/c

% cat .hg/store/fncache

data/a.i

data/a.i.hg/b.i

data/a.i.hg.hg/c.i

% hg verify

checking changesets

checking manifests

crosschecking files in changesets and manifests

checking files

3 files, 3 changesets, 3 total revisions

% rm .hg/store/fncache

% hg verify

checking changesets

checking manifests

crosschecking files in changesets and manifests

checking files

 data/a.i@0: missing revlog!

 data/a.i.hg.hg/c.i@2: missing revlog!

 data/a.i.hg/b.i@1: missing revlog!

3 files, 3 changesets, 3 total revisions

3 integrity errors encountered!

(first damaged changeset appears to be 0)