stdint.h and stddef.h are shipped with CLang, but they not included in
Clang's module.map, which causes Clang to import libc versions instead
(and Clang's stdint.h is dispatching to libc). This was causing
hard-to-debug transient failures during incremental rebuilds, like this:
error: module file was created by an older version of the compiler: .../Darwin.swiftmodule
Swift SVN r23230
NFC, and no significant performance change expected. This is part one
of a move to eliminate nil checks from the array implementation.
Swift SVN r22526
NFC, and no significant performance change expected. This is part one
of a move to eliminate nil checks from the array implementation.
Swift SVN r22495
Now that we can read definitions directly from "C" headers, stop trying
to maintain a mirror of the HeapObject struct in Swift code in the
standard library.
Swift SVN r14982
