llvm/clang/test/Preprocessor/builtin_line.c

// RUN: %clang_cc1 -E %s | FileCheck --strict-whitespace %s
#define FOO __LINE__

  FOO
// CHECK: {{^}}  4{{$}}

// PR3579 - This should expand to the __LINE__ of the ')' not of the X.

#define X() __LINE__

A X(

)
// CHECK: {{^}}A 13{{$}}