Enum error errors

/// errorPart1()

/* Declared in the Macros/Constants menu:
 *  M1=1
 *  M2=2
 *  M3=3
 */

// these are obviously duplicates; the compile error
// will always point to "line 0" (line 1 in the script
// editor), even though that line is a comment and the
// actual error is at line 16 (line 17 in the editor).

enum test {
    M1,
    M2,
    M3
}

enum test2 {
    a,
    b,
    c
}

/// errorPart2()

// This results in a "case argument must be constant"
// error, even though the code itself is fine

switch (irandom(10)){
    case test2.a:
        show_debug_message("...");
        break;
    case test2.b:
        show_debug_message("...");
        break;
    case test2.c:
        show_debug_message("...");
        break;
}

// This results in a "malformed assignment statement"
// error, even though the assignment statement itself
// is fine and the real error is in the enum declaration

var blah=test.M1;