On 30/09/11 10:52, Martin wrote:
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
Because you may be writing code that's specific to a platform? I guess
you can have another option that will warn on all machines.
Henry
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