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[MathExtras] Fix UB in minIntN
authorDavid Majnemer <david.majnemer@gmail.com>
Mon, 18 Jul 2016 17:03:09 +0000 (17:03 +0000)
committerDavid Majnemer <david.majnemer@gmail.com>
Mon, 18 Jul 2016 17:03:09 +0000 (17:03 +0000)
commita9c9423e52c4dccb7846c9c37ec22fb642021a5a
treee756e918229f4f150836857df7d04c6be84144b8tree | snapshot
parent7778b11654f3f10fddf2d14557565459d97c4db8commit | diff
[MathExtras] Fix UB in minIntN

We negated a value with a signed type which invited problems when that
value was the most negative signed number.  Use an unsigned type
for the value instead.  It will compute the same twos complement
result without the UB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275815 91177308-0d34-0410-b5e6-96231b3b80d8
include/llvm/Support/MathExtras.h diff | blob | history
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