CFStringCreateWithBytes may not always appear on stack due to
optimizations.
Create a wrapper function for the purposes of testing suppression files
that will always appear on stack for test stability.
Test should be suppressing ASan for a function outside of sanitized
code.
Update function to be extern "C" to match function decoration in
original framework and avoid the leak caused by DemangleCXXABI.
rdar://144800068
4517a332df