[PATCH] gcc: vx-common.h: fix test for VxWorks7
Fri Nov 5 21:26:19 GMT 2021
On 05/11/2021 16.12, Olivier Hainque wrote:
>> On 5 Nov 2021, at 15:12, Rasmus Villemoes <firstname.lastname@example.org> wrote:
> We happen to also have a few fixincludes hunks around. Some of
> them have been there for years now and I thought would be nice to
> propagate at some point.
> Do you use it?
Sort of, kind of. I have previously sent fixups for some of the vxworks
fixincludes, and I think I have a few more I could submit, but since I'm
able to modify our target headers directly that's often much easier.
For example, there's the mkdir fixup that adds
#define mkdir(dir, ...) ((void)0, ##__VA_ARGS__, (mkdir)(dir))
But that macro doesn't play well with code in libstdc++ that says
if (posix::mkdir(p.c_str(), mode))
because that expands to utter nonsense and breaks the build. A better
macro, also using the comma operator to have the mode argument evaluated
then ignored, would be something like
#define mkdir(dir, mode) mkdir(((void)(mode), (dir)))
(or the variadic version to continue allowing a one-argument
invocation). But it was easier to just change the target header, making
that fixinclude pattern no longer apply - knowing that if we ever
compile the mkdir implementation [we have parts of the kernel sources,
but not all], we'll have to fixup the definition.
The one fixinclude-related problem I have is the stdint.h one I've
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