I was in the process of porting our clojure code base to work with SVN
head when I came across the following behavior. It turns out that the
upgrade to head broke our user.clj. If user.clj is broken, and you
invoke clojure.lang.Script from the command line (or from an ant build
process, or you reset the enclojure REPL), then the class
initialization of clojure.lang.RT fails. But because the first
reference to RT in Script is inside a try block, execution passes to
the finally block, which tries to reference RT again, resulting in a
baffling NoClassDefFoundError. The right thing for Script to do would
be to throw the exception generated from the loading of user.clj.
Getting this behavior is as easy as referencing RT from outside a try
block in Script.java.
The following patch demonstrates one way to do this, but there may be
a more idiomatic way. With this patch, instead of the following
exception:
Exception in thread "main" java.lang.NoClassDefFoundError
at clojure.lang.Script.main(Script.java:71)
...now we get this exception:
Exception in thread "main" java.lang.ExceptionInInitializerError
at clojure.lang.Script.<clinit>(Script.java:52)
Caused by: java.lang.RuntimeException: java.lang.Exception: Name
conflict, can't def format because namespace: clojure.contrib.lib
refers to:#=(var clojure/format) (lib.clj:170)
at clojure.lang.RT.<clinit>(RT.java:324)
... 1 more
Caused by: java.lang.Exception: Name conflict, can't def format
because namespace: clojure.contrib.lib refers to:#=(var clojure/
format) (lib.clj:170)
...
at snowtide_util_user.eval__2487.invoke(user.clj:6)
...
rhickey: does cemerick's CA cover employees of his company? If not,
then I can send you one.
Will Morgan
--- src/jvm/clojure/lang/Script.java 2008-10-27 16:33:43.000000000
-0400
+++ Script.java 2008-10-27 16:33:41.000000000 -0400
@@ -49,6 +49,8 @@
*/
public class Script{
+private static final Var out = RT.OUT;
+
public static void main(String[] args) throws Exception{
try
{
@@ -68,7 +70,7 @@
}
finally
{
- OutputStreamWriter w = (OutputStreamWriter)
RT.OUT.get();
+ OutputStreamWriter w = (OutputStreamWriter)out.get();
try
{
w.flush();
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To post to this group, send email to clojure@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
-~----------~----~----~----~------~----~------~--~---
