Clang crashes when compiling Objective C++ BLOCK capturing and using outer ivar in a class member initializer

[kar8uncle]

Clang crashes when compiling the following program: clang++ -fobjc-arc -std=c++11 -o main.o main.mm

#import <Foundation/Foundation.h>

@interface Foo : NSObject
@end

@implementation Foo
{
    id _bar;
}

- (void)captureBar
{
    (void) ^{
        struct
        {
            id bar = _bar;
        } fb;
    };
}
@end

Version

This clang came with Xcode 15.2.

Apple clang version 15.0.0 (clang-1500.1.0.2.5)
Target: arm64-apple-darwin23.5.0
Thread model: posix

[EugeneZelenko]

Apple code may be not same as LLVM. Could you please try LLVM 18 or main branch? https://godbolt.org should be helpful.

[kar8uncle]

I think I tried godbolt before, but it didn't have <Foundation/Foundation.h> header (or any other Objective C headers). Today for some reason I couldn't find clang at all under Objective C or Objective C++.