[JIRA] (JENKINS-13669) NPE in hudson.plugins.mercurial.MercurialSCM.compareRemoteRevisionWith

Sun, 17 Mar 2013 02:37:01 -0700

If the possiblyCachedRepo is null, it means there was an earler error updating or cloning the cache. The polling shouldn't try to continue in that case, but throw an exception.

For instance:

if (!requiresWorkspaceForPolling()) {
    launcher = Hudson.getInstance().createLauncher(listener);
    PossiblyCachedRepo possiblyCachedRepo = cachedSource(Hudson.getInstance(), launcher, listener, true);
    if (possiblyCachedRepo == null) {
        throw new IOException("Could not use cache to poll for changes. See error messages above for more details");
    }
    FilePath repositoryCache = new FilePath(new File(possiblyCachedRepo.getRepoLocation()));
    return compare(launcher, listener, baseline, output, Hudson.getInstance(), repositoryCache);
}
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