[PyPy-issue] [issue636] 64bit JIT Failure on trunk

Bob Ziuchkovski pypy-dev-issue at codespeak.net
Fri Feb 18 02:29:47 CET 2011

New submission from Bob Ziuchkovski <bob.ziuchkovski at gmail.com>:

With current trunk, pypy's JIT produces different behavior between linux32 and 
linux64 builds for the attached sample code.  The attached sample code from 
main.py calls a function with the same input args 10 times.

If run under linux32 JIT, the loop from main.py will produce the same results 
each run through the loop.  If run under linux64 JIT, after several iterations 
of the loop, the results are different.  However, if the JIT is disabled on 
linux64 (--jit trace_limit=-1), the 10 iterations of the loop do produce the 
correct result.  Hence it looks like the sample code triggers a bug that is 
specifically tied to 64bit JIT.

effort: ???
files: pypy_jit_64bit_failure.tar.gz
messages: 2135
nosy: bobbyz, pypy-issue
priority: bug
release: ???
status: unread
title: 64bit JIT Failure on trunk

PyPy development tracker <pypy-dev-issue at codespeak.net>
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