[PATCH] D20913: [asan] add primitives that allow coroutine implementations

[Dmitry Vyukov via llvm-commits]

dvyukov added a comment.

I think GetThreadRangesLocked needs to use main thread stack. Fiber stacks must be preserved alive by some other means (e.g. referenced from the context object), and thus transitively scanned by lsan. However, I think it may not always be the case. For example, if we switch to a fiber stack and then wipe all pointers to the stack (since we are not going to switch back to it, e.g. the fiber approaches it's end). In such situation the only reference the to fiber stack is from SP register...


http://reviews.llvm.org/D20913