# Monday, 14 June 2010
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CLR JIT Bugs Found During IKVM.NET Development

"It is actually fairly common that people notice that things fail under retail but not debug and tend to blame code generation.
While a code generation bug is possible, as a matter of statistics, it is not likely."
-- Vance Morrison

Date CLR Arch Type Description
2010-06-12 v4 x64 Incorrect code Optimizer incorrectly propagates invariants.
2010-06-04 v2, v4 x86 Crash Access violation while compiling code.
2010-04-11 v4 x64 Vulnerability Type safety vulnerability caused by incorrect optimization.
2009-10-28 v4 beta 2 x64 Vulnerability Type safety vulnerability in exception handler code.
2007-07-02 v2 x64 Exception System.InvalidProgramException on verifiable IL.
2007-05-11 v2 x64 Incorrect code 0.0 and -0.0 are considered the same by the optimizer.
2006-12-06 v2 x86 Vulnerability Ability to access array outside of bounds.
Monday, 14 June 2010 10:30:23 (W. Europe Daylight Time, UTC+02:00)  #    Comments [2]
Monday, 14 June 2010 11:46:34 (W. Europe Daylight Time, UTC+02:00)
The links don't work.

ps. that antispam question made me learn something about java, how dare you! =p
Monday, 14 June 2010 11:54:46 (W. Europe Daylight Time, UTC+02:00)
Thanks. Corrected.
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I apologize for the lameness of this, but the comment spam was driving me nuts. In order to be able to post a comment, you need to answer a simple question. Hopefully this question is easy enough not to annoy serious commenters, but hard enough to keep the spammers away.

Anti-Spam Question: What method on java.lang.System returns an object's original hashcode (i.e. the one that would be returned by java.lang.Object.hashCode() if it wasn't overridden)? (case is significant)

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