[llvm-bugs] [Bug 47330] New: clang rewrite introduces duplicate methods for property declare

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47330

            Bug ID: 47330
           Summary: clang rewrite introduces duplicate methods for
                    property declare
           Product: clang
           Version: trunk
          Hardware: Macintosh
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sunbohong at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

xcrun --sdk iphoneos clang -rewrite-objc ./Mock.m -v -target
arm64-apple-ios13.5

```
// Mock.h
@interface Mock : NSObject
@property (nonatomic, assign) NSInteger testProperty;

@end
```

```
// Mock.m
@implementation Mock
@end
```

Output:
```
// Mock.cpp
static struct /*_method_list_t*/ {
        unsigned int entsize;  // sizeof(struct _objc_method)
        unsigned int method_count;
        struct _objc_method method_list[4];
} _OBJC_$_INSTANCE_METHODS_Mock __attribute__ ((used, section
("__DATA,__objc_const"))) = {
        sizeof(_objc_method),
        4,
        {{(struct objc_selector *)"testProperty", "q16 at 0:8", (void
*)_I_Mock_testProperty},
        {(struct objc_selector *)"setTestProperty:", "v24 at 0:8q16", (void
*)_I_Mock_setTestProperty_},
        {(struct objc_selector *)"testProperty", "q16 at 0:8", (void
*)_I_Mock_testProperty},
        {(struct objc_selector *)"setTestProperty:", "v24 at 0:8q16", (void
*)_I_Mock_setTestProperty_}}
};
```

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