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

[dcb]

Public bug reported:

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;

** Affects: qemu
     Importance: Undecided
         Status: New

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

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

Status in QEMU:
  New

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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