Re: [Qemu-devel] [Bug 902720] [NEW] TIME_MAX not set correctly for OpenBSD in qemu-common.h

[Gerd Hoffmann <902720@bugs.launchpad.net>]

Hi,

>>> Looking at the OpenBSD buildbot logs I noticed a warning that appears
>>> to be a bug in the code.
>>> OpenBSD has a 32-bit time_t on all archs at the moment (32-bit and
>>> 64-bit).

Ouch.  Adding 64bit arch with 32bit time_t is pretty lame IMHO.  There
are a bunch of years left to fix that that though.

>>> #ifndef TIME_MAX
>>> #define TIME_MAX LONG_MAX
>>> #endif
>>>
>>> for OpenBSD this should be INT_MAX.

Guess we'll need an #ifdef then.

>> This needs special handling for w32 / w64, too.
>> Looking at the code where TIME_MAX is used, I assume that
>> more fixes are needed. The following code for example
>> won't work:
>>
>> if (lifetime > INT_MAX) {

With 32bit time_t lifetime wouldn't become larger than INT_MAX anyway,
so it doesn't matter ;)

> Still looking for comment on this since you added the initial code which
> has this bug in it.

cheers,
  Gerd

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https://bugs.launchpad.net/bugs/902720

Title:
  TIME_MAX not set correctly for OpenBSD in qemu-common.h

Status in QEMU:
  New

Bug description:
  Looking at the OpenBSD buildbot logs I noticed a warning that appears to be a bug in the code.
  OpenBSD has a 32-bit time_t on all archs at the moment (32-bit and 64-bit).

    CC    i386-softmmu/monitor.o
  /buildbot-qemu/default_openbsd_current/build/monitor.c: In function 'expire_password':
  /buildbot-qemu/default_openbsd_current/build/monitor.c:944: warning: overflow in implicit constant conversion

  qemu-common.h has...

  #ifndef TIME_MAX
  #define TIME_MAX LONG_MAX
  #endif

  for OpenBSD this should be INT_MAX.

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