[Swift-devel] [Fwd: [Bug 189] New: If .kml file is empty, swift exits swiftly with cryptic error message]

[Michael Wilde]

This is the problem, Glen.

Somehow oops.kml got zeroed out, its a zero-length file.
So rm oops.kml oops.xml

and try again.

If you do an ls -lt on your swift dir, you can see where things stopped 
working around 15:41, the time that oops.kml was last written to.

I filed a bug report to clean up this error handling. It should say "oh, 
empty kml file, i gotta recompile".

- Mike


-------- Original Message --------
Subject: [Bug 189] New: If .kml file is empty, swift exits swiftly with 
cryptic error message
Date: Mon, 23 Mar 2009 16:42:49 -0500 (CDT)
From: bugzilla-daemon at mcs.anl.gov
To: wilde at mcs.anl.gov

https://bugzilla.mcs.anl.gov/swift/show_bug.cgi?id=189

            Summary: If .kml file is empty, swift exits swiftly with
                     cryptic error message
            Product: Swift
            Version: unspecified
           Platform: All
         OS/Version: All
             Status: NEW
           Severity: normal
           Priority: P2
          Component: SwiftScript language
         AssignedTo: benc at hawaga.org.uk
         ReportedBy: wilde at mcs.anl.gov


If the .kml file for a previously compiled swift script gets somehow set to
length 0 (perhaps from a ^C on a prior run, not sure...) then swift 
gives the
user a very confusing message:

com$ swift t.swift
Swift svn swift-r2737 cog-r2335

RunID: 20090323-1638-kg6fi441
SwiftScript trace: Hi
Progress:
Final status:
com$ ls -lt
total 20
-rw-r--r--  1 wilde ci-users 1641 Mar 23 16:38 t-20090323-1638-kg6fi441.log
-rw-r--r--  1 wilde ci-users  676 Mar 23 16:38 t.kml
-rw-r--r--  1 wilde ci-users  294 Mar 23 16:38 t.xml
-rw-r--r--  1 wilde ci-users   57 Mar 23 16:38 swift.log
-rw-r--r--  1 wilde ci-users   13 Mar 23 16:38 t.swift
com$ >t.kml
com$ swift t.swift
Could not start execution.
     null
com$ ls -lt *log
-rw-r--r--  1 wilde ci-users  114 Mar 23 16:38 swift.log
-rw-r--r--  1 wilde ci-users  210 Mar 23 16:38 t-20090323-1638-q8vrpyr4.log
-rw-r--r--  1 wilde ci-users 1641 Mar 23 16:38 t-20090323-1638-kg6fi441.log
com$ cat *pyr4.log
2009-03-23 16:38:45,645-0500 DEBUG Loader Detailed exception:
java.lang.NullPointerException
     at org.griphyn.vdl.karajan.Loader.compile(Loader.java:224)
     at org.griphyn.vdl.karajan.Loader.main(Loader.java:126)
com$

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