[Qemu-devel] [Bug 1630527] Re: qemu/hw/i386/amd_iommu.c:188: possible bad shift ?

[T. Huth]

Thanks for reporting this bug! Looks like this has already been fixed by this 
commit here:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=1d5b128cbeeab638f772e


** Changed in: qemu
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1630527

Title:
  qemu/hw/i386/amd_iommu.c:188: possible bad shift ?

Status in QEMU:
  Fix Committed

Bug description:
  qemu/hw/i386/amd_iommu.c:188]: (error) Shifting 32-bit value by 64
  bits is undefined behaviour

  Source code is

      uint64_t mask = ((1 << length) - 1) << bitpos;

  Maybe better code

      uint64_t mask = ((1ULL << length) - 1) << bitpos;

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