Child processes were exiting too early before the parent has a chance
to read a null pointer from the child, indicating that there are no
more instances to reflect. This wasn't a problem on OS X because the
I/O latency is so small compared to the iOS simulator, where the
problem would come up under heavy load. This makes the end-to-end
remote mirror tests deterministic again.
rdar://problem/26230879
Also add end-to-end tests for this finally, and fix a bug in
the SwiftReflectionTest library where we would give up on an
module completely if it did not have a field metadata section.
This is of course wrong if the module defines closures but
not nominal types.
Implement the ReflectionContext's implementation of:
swift_reflection_projectExistential.
First, we get the type info of the existential typeref - it should be a
record type info. If it's a class existential, it has trivial layout:
the first word is a pointer to the class instance. Otherwise, if the
value fits in the 3-word buffer of the existential container, it
trivially is also at the start of the container. Otherwise, the value is
off in a heap box somewhere, but the first word of the container is a
pointer to that box.
This is a squash of the following commits:
* [SE-0054] Import function pointer arg, return types, typedefs as optional
IUOs are only allowed on function decl arguments and return types, so
don't import typedefs or function pointer args or return types as IUO.
* [SE-0054] Only allow IUOs in function arg and result type.
When validating a TypeRepr, raise a diagnostic if an IUO is found
anywhere other thn the top level or as a function parameter or return
tpye.
* [SE-0054] Disable inference of IUOs by default
When considering a constraint of the form '$T1 is convertible to T!',
generate potential bindings 'T' and 'T?' for $T1, but not 'T!'. This
prevents variables without explicit type information from ending up with
IUO type. It also prevents implicit instantiation of functions and types
with IUO type arguments.
* [SE-0054] Remove the -disable-infer-iuos flag.
* Add nonnull annotations to ObjectiveCTests.h in benchmark suite.
- Improper handling of read() returning an incomplete read
- Update SwiftReflectionTest library for new builtin types section
Only tested manually so far; automated tests coming soon.
Implements SE-0055: https://github.com/apple/swift-evolution/blob/master/proposals/0055-optional-unsafe-pointers.md
- Add NULL as an extra inhabitant of Builtin.RawPointer (currently
hardcoded to 0 rather than being target-dependent).
- Import non-object pointers as Optional/IUO when nullable/null_unspecified
(like everything else).
- Change the type checker's *-to-pointer conversions to handle a layer of
optional.
- Use 'AutoreleasingUnsafeMutablePointer<NSError?>?' as the type of error
parameters exported to Objective-C.
- Drop NilLiteralConvertible conformance for all pointer types.
- Update the standard library and then all the tests.
I've decided to leave this commit only updating existing tests; any new
tests will come in the following commits. (That may mean some additional
implementation work to follow.)
The other major piece that's missing here is migration. I'm hoping we get
a lot of that with Swift 1.1's work for optional object references, but
I still need to investigate.
swift-reflection-test is now the test that forks a swift executable
and performs remote reflection, making it runnable on other targets,
such as the iOS simulator.
swift-reflection-dump is now a host-side tool that dumps the remote
reflection sections for any platform binary and will continue to
link in LLVM object file support.
This necessitates finally moving lib/Refleciton into stdlib/public,
since we're linking target-specific versions of the test tool and
we would eventually like to adopt some of this functionality in
the runtime anyway.
This is a small helper library to communicate information back to
swift-reflection-test from a test swift executable. Each swift test
file under test/Reflection should link this library to get the main
test hook to send responses back to the test tool.
