tree 8490b1393ac67979535e4caae9400c8b0e121e7f
parent 52536b57c44723d1aae559e04a427181778099ff
author Hans Wennborg <hans@hanshq.net> 1555401260 +0000
committer Hans Wennborg <hans@hanshq.net> 1555401260 +0000

Asan use-after-scope: don't poison allocas if there were untraced lifetime intrinsics in the function (PR41481)

If there are any intrinsics that cannot be traced back to an alloca, we
might have missed the start of a variable's scope, leading to false
error reports if the variable is poisoned at function entry. Instead, if
there are some intrinsics that can't be traced, fail safe and don't
poison the variables in that function.

Differential revision: https://reviews.llvm.org/D60686

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358478 91177308-0d34-0410-b5e6-96231b3b80d8