Hi,

At Sun, 15 Feb 2009 06:27:35 +0900,
Charlie Savage wrote in [ruby-core:22116]:
> Failure occurs when running miniruby.exe for the first time:
> 
> File: f:\dd\vctools\crt_bld\self_x86\src\commit.c, line 69.
> Expression: ("Invalid file descriptor.  File possibly closed by a different thread", 0)

It's false assertion.  Report it to Microsoft.

-- 
Nobu Nakada