#define SIZE_MAX 16
int my_array[SIZE_MAX];

int my_array[16];

#define ARRAY_SIZE 0

int Array[ARRAY_SIZE] = {};

main.cpp:3:11: warning: zero size arrays are an extension [-Wzero-length-array]
int Array[ARRAY_SIZE] = {};
          ^~~~~~~~~~
main.cpp:1:20: note: expanded from macro 'ARRAY_SIZE'
#define ARRAY_SIZE 0
                   ^
1 warning generated.

static StringRef getImmediateMacroName(SourceLocation Loc,
                                       const SourceManager &SM,
                                       const LangOptions &LangOpts) {
   assert(Loc.isMacroID() && "Only reasonble to call this on macros");
   // Walk past macro argument expanions.
   while (SM.isMacroArgExpansion(Loc))
     Loc = SM.getImmediateExpansionRange(Loc).first;