#8773: GCC-4.5.0 breaks GAP -- the workspace is broken, hence gap('2+2') fails.
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Reporter: was | Owner:
GeorgSWeber
Type: defect | Status: closed
Priority: major | Milestone:
sage-4.4.1
Component: build | Resolution: fixed
Keywords: | Author:
Upstream: Reported upstream. Little or no feedback. | Reviewer:
Merged: 4.4.1.alpha0 | Work_issues:
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Comment(by was):
More readable:
"Well done Willem. The diagnosis looks correct. This is old code and
clearly the nice solution is to use a suitable union type so as to be more
honest with the C compiler about what is actually being passed back and
forth. Is there an easy way to pass me the proposed patch and I'll either
apply it to GAP development branch or send you a preferred version if I
want to do it a little differently.
SaveDouble/LoadDouble can probably also be handled correctly with unions,
so long as, in
{{{
union { char bytes[sizeof(double)], double d};
}}}
one can rely on bytes including all the data of double. Does anyone know
anything about this? Otherwise might be better to use void * and memcopy
or something like that.
Steve"
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8773#comment:16>
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