http://dev.clojure.org/jira This file is an XML representation of an issue en-us 4.4 649 25-07-2011 http://dev.clojure.org/jira/browse/CLJ-1034 Clojure <p>If you have two data_readers.clj files on the classpath that agree with one another about the mapping of a given literal, Clojure still claims there is a conflict.</p> CLJ-1034

"Conflicting data-reader mapping" triggered when the same data_readers.clj is on the classpath twice

Defect Minor Closed Completed Unassigned Phil Hagelberg Thu, 26 Jul 2012 16:04:32 -0500 Sat, 1 Sep 2012 08:37:48 -0500 Sat, 1 Sep 2012 08:37:48 -0500 Release 1.5 10 5 <p>This comes up when using checkout dependencies in Leiningen. If the checked-out project contains data_readers.clj, Clojure will throw an exception.</p> <p>To reproduce:</p> <p><b>user=&gt;</b> (spit "/tmp/data_readers.clj" "{foo/bar foo.core/bar}")<br/> <em>nil</em><br/> <b>user=&gt;</b> (with-redefs [clojure.core/data-reader-urls (constantly <span class="error">&#91;(java.net.URL. &quot;file:/tmp/data_readers.clj&quot;)&#93;</span>)] (#'clojure.core/load-data-readers))<br/> <em>{foo/bar #'foo.core/bar}</em><br/> <b>user=&gt;</b> (with-redefs [clojure.core/data-reader-urls (constantly <span class="error">&#91;(java.net.URL. &quot;file:/tmp/data_readers.clj&quot;)&#93;</span>)] (#'clojure.core/load-data-readers))<br/> <em>ExceptionInfo Conflicting data-reader mapping clojure.core/ex-info (core.clj:4227)</em></p> <p>Attached clj_1034_data_readers_fix.diff with simple fix: checks that new mappings actually point to different vars before claiming a conflict.</p> Approval Ok Global Rank