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decodetree: Ensure build_tree does not include values outside insnmask

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Reproduced with "scripts/decodetree.py /dev/null".

Backports commit 9b3186e38f00ae0cba36c096e3654f916699f336 from qemu
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Philippe Mathieu-Daudé 2019-03-13 11:12:06 -04:00 committed by Lioncash
parent 20994eca53
commit edb21478b7
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 1 additions and 1 deletions
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qemu/scripts/decodetree.py
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@ -918,7 +918,7 @@ class Tree:
def build_tree(pats, outerbits, outermask):
# Find the intersection of all remaining fixedmask.
innermask = ~outermask
innermask = ~outermask & insnmask
for i in pats:
innermask &= i.fixedmask