diff options
Diffstat (limited to 'src/clean.cc')
| -rw-r--r-- | src/clean.cc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/clean.cc b/src/clean.cc index 72dee1f..575bf6b 100644 --- a/src/clean.cc +++ b/src/clean.cc @@ -129,7 +129,16 @@ int Cleaner::CleanDead(const BuildLog::Entries& entries) { PrintHeader(); for (BuildLog::Entries::const_iterator i = entries.begin(); i != entries.end(); ++i) { Node* n = state_->LookupNode(i->first); - if (!n || !n->in_edge()) { + // Detecting stale outputs works as follows: + // + // - If it has no Node, it is not in the build graph, or the deps log + // anymore, hence is stale. + // + // - If it isn't an output or input for any edge, it comes from a stale + // entry in the deps log, but no longer referenced from the build + // graph. + // + if (!n || (!n->in_edge() && n->out_edges().empty())) { Remove(i->first.AsString()); } } |