Build Error on Trunk
warlord at MIT.EDU
Sat Sep 6 18:37:44 EDT 2008
Quoting Tom Browder <tom.browder at gmail.com>:
> I just updated fron the trunk (r17498), configured using
> '--enable-compile-warnings', and, using gcc-4.3.1, got the following
> errors (it occurs four times in the same file, all at calls of
> G_LOCK(threads) and G_UNLOCK(threads).
> io-gncxml-v2.c:1351: error: dereferencing type-punned pointer will
> break strict-aliasing rules
Hmm, I dont see this with gcc 4.1.2, so it must be a new-in-4.3
warning. Usually this error is about casting a pointer of one
type to another in a potentially unsafe way. In this case it could
mean a bug in G_LOCK/G_UNLOCK or it could be a bug in the way
we use it.
> I found a thread on the devel list for a similar problem but nothing
> about this. (see
> I get a complete build with 'configure --disable-error-on-warning'.
> Is it safe to use?
Define "safe".. It *is* trunk after all. In trunk there's no guarantee
that your data wont get destroyed. We try hard to make sure that
doesn't happen, of course, but trunk is a development branch.
Speaking of which, this should have been asked on -devel, not -user
1) It IS a development question, and
2) it is about testing the trunk.
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Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
Member, MIT Student Information Processing Board (SIPB)
URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH
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