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FreeBSD FFI Oddity

8 September 2013

Periodically, I build the CogVM from source on FreeBSD. I've prevously mentioned that I had encountered some oddity with FFI on that platform. Still there today.

The following code crashes the VM/image:

| db |
db := SQLiteConnection fileNamed: '/tmp/x.db'.
db withResultForQuery: 'select * from a;'
  do: [ :result |
    result do: [ :row |
      Transcript show: row asString; cr ]].
db close.

The oddity is that one particular version of the SqueakFFIPrims plugin works. Several other versions that I've built all fail. Overwriting the failed versions of the plugin with the known-working one allows that particular crashing VM's FFI to work.

-rwxr-xr-x  1 root  wheel  77035 Oct 21  2012 ./4.0-2562/SqueakFFIPrims
-rwxr-xr-x  1 root  wheel  77035 Oct 21  2012 ./4.0-2586/SqueakFFIPrims
-rwxr-xr-x  1 root  wheel  74637 Nov 11  2012 ./4.0-2586/SqueakFFIPrims.broken
-rwxr-xr-x  1 root  wheel  77035 Oct 21  2012 ./4.0-2779/SqueakFFIPrims

The working one appears here three times. I'm running FreeBSD 8.3.

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