[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] qemu-upstream compile failure in intel_iommu.c:vtd_context_device_invalidate
Compiling qemu-xen at 2ce1d30 ("xenfb.c: avoid expensive loops when prod <= out_cons") leads to this error with -O1: xen.git/tools/qemu-xen-dir/hw/i386/intel_iommu.c: In function âvtd_context_device_invalidateâ: xen.git/tools/qemu-xen-dir/hw/i386/intel_iommu.c:911:46: error: âmaskâ may be used uninitialized in this function [-Werror=maybe-uninitialized] if (vtd_as && ((devfn_it & mask) == (devfn & mask))) { ^ It works with -O2. From the code flow its clear that mask is always initialized. Looks like gcc 5.2.1 does no proper diagnostic at -O1. What should be done with such issues, are they fixed in the code? Olaf _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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