[ubsan] warn inside the sigaction interceptor if static linking is suspected, and continue instead of crashing on null deref Reviewed By: kostik Differential Revision: https://reviews.llvm.org/D109081
[ubsan] warn inside the sigaction interceptor if static linking is suspected, and continue instead of crashing on null deref Reviewed By: kostik Differential Revision: https://reviews.llvm.org/D109081