[clang-format] Cannot recognize multiplication semantic of *

[chestnykh]

Consider the following sample

enum X {
        two = 2
};

#define FN(N) \
void fn(void *addr) \
{ \
        __builtin_memset(addr, 0, N * two); \
} \

FN(4)

And .clang-format containing just BasedOnStyle: LLVM

Then we get the output where clang-format made a 'pointer of type N' instead of multiplication:

#define FN(N)                                                                  \
  void fn(void *addr) { __builtin_memset(addr, 0, N *two); }

[chestnykh]

Reduced repro:
#define X M(a * b) -> #define X M(a *b)

[owenca]

Reverted by 7e7a906.

[owenca]

Reduced repro: #define X M(a * b) -> #define X M(a *b)

That's intended. Instead, a min repro is e.g.:

#define X     \
  {           \
    M(a * b); \
  }