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Re: [PATCH] misc: fix __COUNTER__ macro to be referenced properly
From: |
Stefan Hajnoczi |
Subject: |
Re: [PATCH] misc: fix __COUNTER__ macro to be referenced properly |
Date: |
Fri, 20 Mar 2020 11:09:52 +0000 |
On Thu, Mar 19, 2020 at 09:19:24AM -0700, address@hidden wrote:
> From: danbrodsky <address@hidden>
>
> - __COUNTER__ doesn't work with ## concat
> - replaced ## with glue() macro so __COUNTER__ is evaluated
>
> Signed-off-by: danbrodsky <address@hidden>
> ---
> include/qemu/lockable.h | 2 +-
> include/qemu/rcu.h | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/qemu/lockable.h b/include/qemu/lockable.h
> index 1aeb2cb1a6..a9258f2c2c 100644
> --- a/include/qemu/lockable.h
> +++ b/include/qemu/lockable.h
> @@ -170,7 +170,7 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(QemuLockable,
> qemu_lockable_auto_unlock)
> * }
> */
> #define QEMU_LOCK_GUARD(x) \
> - g_autoptr(QemuLockable) qemu_lockable_auto##__COUNTER__ = \
> + g_autoptr(QemuLockable) glue(qemu_lockable_auto, __COUNTER__) = \
> qemu_lockable_auto_lock(QEMU_MAKE_LOCKABLE((x)))
>
> #endif
Please fix WITH_QEMU_LOCK_GUARD() too. It's in the same header file and
gcc -E shows that it also fails to expand __COUNTER__:
for (__attribute__((cleanup(glib_autoptr_cleanup_QemuLockable)))
QemuLockable_autoptr qemu_lockable_auto__COUNTER__ = ...
Thanks,
Stefan
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