[ObjC] Name lookup in methods shouldn't allow shadowing types #9748
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Arguably as a bug, Clang has previously not mixed up Objective-C
parameter names with types. This allows developers to write
parameter names that _should_ shadow type names, but don't. For
instance:
@interface Foo
-(void)foo:(int)id bar:(id)name; // OK
@EnD
Commit 9778808 changed the way
that parameters are parsed to bring it more in line with how C
parameters are parsed, but it breaks the example above. Given an
expectation that the change wouldn't introduce source breaks, this
is not something we can go forward with.
977880... did this so that late-parsed attributes could reference
Objective-C parameters. This change buffers Objective-C parameter
info until after all parameters are parsed and turns them into
parameter declarations before realizing late-parsed attributes
instead.
Radar-ID: 139996306
(cherry picked from commit d8c7c55)
|
@swift-ci please test llvm |
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@swift-ci test |
|
Cherry-pick of #9632 |
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Arguably as a bug, Clang has previously not mixed up Objective-C parameter names with types. This allows developers to write parameter names that should shadow type names, but don't. For instance:
Commit 9778808 changed the way that parameters are parsed to bring it more in line with how C parameters are parsed, but it breaks the example above. Given an expectation that the change wouldn't introduce source breaks, this is not something we can go forward with.
977880... did this so that late-parsed attributes could reference Objective-C parameters. This change buffers Objective-C parameter info until after all parameters are parsed and turns them into parameter declarations before realizing late-parsed attributes instead.
Radar-ID: 139996306
(cherry picked from commit d8c7c55)