I’m trying to write a clang tool that finds all calls to a fucntion with variable args and returns the type of argument.
When I put in a constant enum value, for example:

static void foo(char *, ...) {}

enum test {
  TEST_VALUE1,
  TEST_VALUE2
};

void main() {
  foo("bla", TEST_VALUE1);
}

I get this AST for the argument:

DeclRefExpr 0x55933eb553b8 'int' EnumConstant 0x55933eb53ec0 'TEST_VAL1' 'int'

I see that I could get from this an clang::EnumConstantDecl object, but I don’t see any where from this to get the type of the enum (enum_test).

Is there any way to do this?