Right now the stdlib/overlays can compile against -Onone tests with or without
-enable-ownership-stripping-after-serialization. This will help me to prevent
other work going on from breaking these properties.
The SILGen testsuite consists of valid Swift code covering most language
features. We use these tests to verify that no unknown nodes are in the
file's libSyntax tree. That way we will (hopefully) catch any future
changes or additions to the language which are not implemented in
libSyntax.
Update static exclusivity diagnostics to not suggest copying to a local
when a call to swapAt() should be used instead. We already emit a FixIt in
this case, so don't suggest an an helpful fix in the diagnostic.
rdar://problem/32296784
Remove the descriptive decl kind (since with subpaths it is not correct and
cannot represent a tuple element) and change "simultaneous" to "overlapping"
in order to lower the register slightly and avoid connoting threading.
For example, for the following:
takesTwoInouts(&x.f, &x.f)
the diagnostic will change from
"simultaneous accesses to var 'x.f', but modification requires exclusive access;
consider copying to a local variable"
to
"overlapping accesses to 'x.f', but modification requires exclusive access;
consider copying to a local variable"
Turn on static checks for the already-accepted portions of SE-0176: Enforce
Exclusive Access to Memory.
This includes static checking for overlapping inout parameter accesses
(and inout-to-pointer accesses).
Static violations are warnings in Swift 3 compatibility mode and errors
in Swift 4 mode.
Dynamic enforcement is not enabled by default.
This does not add static checking for the Non-Escaping Recursion
Restriction rule nor the Non-Escaping Parameter Call Restriction rule. These
are revisions to SE-0176 still under review.
A stored property of a class may be overridden by a computed one, and a property requirement may be witnessed by a computed property, but rejecting inout aliasing in these cases isn't very helpful. Only reject cases that are definitely computed and will always behave incorrectly. Fixes rdar://problem/19633414.
Swift SVN r24986
