clang-format adds unnecessary space before & when :: operator is used

[mkaz101]

I experienced a strange bug in clang-format in version 19.1.1. I didn't observe it in version 16 (which I previously used in my project).
I have a setting to keep reference (&) signs glued to the type on the left side (ReferenceAlignment: Left). This formatting works for most functions, however if the function is in global scope (prepended with ::) clang-format is adding additional space between the type and &.

Here is the small code snippet that I used for testing.

class test {
  friend std::ostream& ::operator<<(std::ostream & lhs,
                                    const ::test_1::test2 &
                                        rhs);

  friend std::ostream& operator<<(std::ostream& lhs,
                                  const ::test_1::test2& rhs);
}

[AlyElashram]

I can check this out , if no one will. @mkaz101 can you please attach your .clang-format file to be able to verify this and pinpoint the exact location of the bug.

[rymiel]

Seems to have regressed in 3f3620e

I don't remember that patch anymore but looking at the diff, a check for coloncolon was removed, so maybe that's what happened?

[owenca]

Seems to have regressed in 3f3620e

That patch uncovered a bug that ::operator was not annotated as FunctionDeclarationName.

I don't remember that patch anymore but looking at the diff, a check for coloncolon was removed, so maybe that's what happened?

That check was removed because it became redundant.