Evgeniy Stepanov 00cd59a292 [safestack] Add canary to unsafe stack frames
Add StackProtector to SafeStack. This adds limited protection against
data corruption in the caller frame. Current implementation treats
all stack protector levels as -fstack-protector-all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266004 91177308-0d34-0410-b5e6-96231b3b80d8
2016-04-11 22:27:48 +00:00
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