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incr.comp.: Improve error message for unknown fingerprint.

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This commit is contained in:
Michael Woerister 2017-10-27 18:56:29 +02:00
parent 6c1529b34f
commit 6a3659427e
1 changed files with 6 additions and 1 deletions
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7
src/librustc/dep_graph/graph.rs
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@ -328,7 +328,12 @@ impl DepGraph {
} }
pub fn fingerprint_of(&self, dep_node: &DepNode) -> Fingerprint { pub fn fingerprint_of(&self, dep_node: &DepNode) -> Fingerprint {
self.fingerprints.borrow()[dep_node] match self.fingerprints.borrow().get(dep_node) {
Some(&fingerprint) => fingerprint,
None => {
bug!("Could not find current fingerprint for {:?}", dep_node)
}
}
} }
pub fn prev_fingerprint_of(&self, dep_node: &DepNode) -> Option<Fingerprint> { pub fn prev_fingerprint_of(&self, dep_node: &DepNode) -> Option<Fingerprint> {