Messages in this thread | | | Date | Mon, 26 Oct 2009 07:25:20 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] perf tools: Kill off -Wcast-align |
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* Paul Mundt <lethal@linux-sh.org> wrote:
> The present use of -Wcast-align causes the build to blow up on SH due to > generating a "cast increases required alignment of target type" error on > each invocation of list_for_each_entry(). > > It seems that this was previously reported and killed off in the ia64 > support patch, but nothing seems to have happened with that. Presumably > the same problem still remains there, too. > > Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Is this a GCC bug producing false positive warnings? The GCC manpage says:
-Wcast-align 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.
Which looks moderately useful - if it works.
Ingo
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