[clang-format] [regression] formatting of macro not stable; oscillates between two ways

[joelhock]

formatting of the MEMBER macro oscillates between the two ways shown below each time it is reformatted with 19.1.0-rc3 and also main as of 114ff99. version 18 consistently chose the first one, fwiw.

empty .clang-format

struct MyStruct : Base {
  int foo;

#define MEMBER(NAME)                                                           \
  NAME { "" }
  MEMBER(bar);
};

struct MyStruct : Base {
  int foo;

#define MEMBER(NAME) NAME{""}
  MEMBER(bar);
};

[owenca]

version 18 consistently chose the first one, fwiw.

Which version of 18?

[joelhock]

ah, sorry, what I said wasn't correct. version 17.0.1 (e19b7dc) stably formatted this code, but version 18 and 19 do not.

[owenca]

Bisected it to 063e3fe.

version 18 consistently chose the first one, fwiw.

version 17.0.1 (e19b7dc) stably formatted this code, but version 18 and 19 do not.

Actually, version 17.0.1 consistently chose the second one.

[owenca]

0fa78b6 has been reverted by 3449ed8.