On 30/09/2011 10:44, Henry Vermaak wrote:
Hi list
Thinking more about the alignment problems on arm and elsewhere, I was
wondering how hard it would be to implement something like gcc's
-Wcast-align. Here's a description from the man page:
Warn whenever a pointer is cast such that the required alignment of
the target is increased. For example, warn if a "char *" is cast to
an "int *" on machines where integers can only be accessed at two- or
four-byte boundaries.
Why limit it to "on machines where ... can only be accessed at ...
boundaries".
If code is written for multiply platforms, then the implementor may be
on a machine where the cast is allowed, and needs no warning, but soon
as the code is compiled on a different architecture, the warnings come up.
It would be good, if one could also enable warnings for code, that may
have issues on other platforms
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