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Date:      Thu, 23 Aug 2018 16:06:03 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 230847] mm: vm_map.h prevents QEMU compilation
Message-ID:  <bug-230847-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230847

            Bug ID: 230847
           Summary: mm: vm_map.h prevents QEMU compilation
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: royger@freebsd.org

Hello,

While trying to compile the current version of QEMU I've got the following
error:

  CC      hw/usb/dev-bluetooth.o
  CC      hw/usb/dev-smartcard-reader.o
  CC      hw/usb/dev-mtp.o
  CC      hw/usb/host-libusb.o
  CC      hw/usb/host-stub.o
  CC      hw/usb/xen-usb.o
  CC      hw/virtio/virtio-bus.o
  CC      hw/virtio/virtio-rng.o
  CC      hw/virtio/virtio-pci.o
  CC      hw/virtio/vhost-stub.o
  CC      hw/watchdog/watchdog.o
  CC      hw/watchdog/wdt_i6300esb.o
  CC      hw/watchdog/wdt_ib700.o
  CC      hw/xen/xen_backend.o
  CC      hw/xen/xen_devconfig.o
  CC      hw/xen/xen_pvdev.o
In file included from /root/src/xen/tools/qemu-xen-dir/hw/usb/xen-usb.c:30:
In file included from
/root/src/xen/tools/qemu-xen-dir/include/hw/xen/xen_backend.h:4:
In file included from
/root/src/xen/tools/qemu-xen-dir/include/hw/xen/xen_common.h:19:
In file included from /root/src/xen/tools/qemu-xen-dir/include/hw/pci/pci.h=
:6:
In file included from /root/src/xen/tools/qemu-xen-dir/include/sysemu/dma.h=
:16:
In file included from
/root/src/xen/tools/qemu-xen-dir/include/block/block.h:10:
/root/src/xen/tools/qemu-xen-dir/include/block/dirty-bitmap.h:86:68: error:
expected ')'
bool bdrv_dirty_iter_next_area(BdrvDirtyBitmapIter *iter, uint64_t max_offs=
et,
                                                                   ^
/usr/include/vm/vm_map.h:188:26: note: expanded from macro 'max_offset'
#define max_offset      header.start    /* (c) */
                              ^
/root/src/xen/tools/qemu-xen-dir/include/block/dirty-bitmap.h:86:31: note: =
to
match this '('
bool bdrv_dirty_iter_next_area(BdrvDirtyBitmapIter *iter, uint64_t max_offs=
et,
                              ^
  CC      hw/xen/xen-common.o
  CC      migration/migration.o
1 error generated.
  CC      migration/socket.o

I'm not sure why vm_map.h gets included there, but in any case having macro
names like max_offset is asking for trouble. I would like to ask for feedba=
ck,
but IMO the easier way to solve this is to rename the macro to VM_MAX_OFFSET
(and VM_MIN_OFFSET).

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