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From: David Abrahams (dave_at_[hidden])
Date: 2005-04-28 14:52:25

Martin Wille <mw8329_at_[hidden]> writes:

> John Maddock wrote:
>>>> unicode_iterator_test is failing at runtime with gcc-2.95.3, but
>>>> passes when run locally on my machine (I'm fairly sure that the
>>>> error shown may have been a real issue at some point, but
>>>> shouldn't be now IMO).
>>> The test binary for unicode_iterator_test/gcc-2.95.3 and the
>>> associated XML file on my Machine date back to 2004-02-15. Why
>>> doesn't it get rebuilt when there was a code change to fix the
>>> errors? Could this be a result of a failure in building some depend
>>> code which doesn't cause the XML file to get deleted (that's the
>>> only idea I have)?
>> If I remember correctly this one was down to a temporary problem in
>> Boost.Test: the changes to the Boost.Test headers (the macros
>> changed) should have triggered a rebuild. I have seen before though
>> that changes to library dependencies don't always trigger rebuilds.
> That's pretty alarming.

It's a well-known problem: the build system can't trace through
macro-generated #includes like:

     #include FOO(BAR)

Dave Abrahams
Boost Consulting

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