Assertion failed: (Result.isInvalid() && "C++ binary operator overloading is missing candidates!")

[int3]

Line 19 of the following file triggers a parsing assertion error:

test.mm

#include <Foundation/Foundation.h>

enum class Bar : int {
  QUX,
};

@interface Foo : NSObject
+(int) foo;
+(void) run;
@end

@implementation Foo
+(int) foo {
  return 0;
}

+(void) run {
  Bar bar;
  bar = {[self foo]};
}
@end

Compile with clang++ -std=c++17 -c test.mm. Workaround is to explicitly specify Bar{...} on that line.

[llvmbot]

@llvm/issue-subscribers-clang-frontend

[shafik]

CC @rjmccall

[tvc]

I'm able to reproduce with this short snippet.

enum class E {};

int main() {
        E e;
        e = {0};
}

Compiled with clang -std=c++17 -c test.cpp.

[shafik]

Nice, that is a much simpler case.

Looks like a duplicate of: #27443 although could be different underlying causes.

[shafik]

PR: https://reviews.llvm.org/D153375