import std.path : join;

enum rootdir = r"C:\Path\";
enum testdir = join(rootdir, "simple");

void main() { }

enumBug.d(4): Error: variable __arrayArg774 is used before initialization
enumBug.d(4): Error: cannot evaluate join("C:\\Path\\","simple",(const(char)[][0u] __arrayArg774 = void;
 , cast(const(char)[][])__arrayArg774)) at compile time
enumBug.d(4): Error: cannot evaluate join("C:\\Path\\","simple",(const(char)[][0u] __arrayArg774 = void;
 , cast(const(char)[][])__arrayArg774)) at compile time

std.path is supposed to work on strings, it doesn't touch std.file at all. Why can't it run at compile time?

Andrej Mitrovic:

> std.path is supposed to work on strings, it doesn't touch std.file at all. Why can't it run at compile time?

Most of Phobos is written in D, and D distributions contain full source code, so in similar cases you just need to take a look at the sources of Phobos and do some experiments to locate the problem. It seems your problem is caused by a CTFE bug, I will file it in bugzilla:


int foo(int x, int y, int[] more...) {
    return 0;
}
enum r = foo(0, 0);
void main() {}


Bye,
bearophile

> I will file it in bugzilla:

http://d.puremagic.com/issues/show_bug.cgi?id=5524

On 2/4/11, bearophile <bearophileHUGS@lycos.com> wrote:
> Most of Phobos is written in D, and D distributions contain full source code, so in similar cases you just need to take a look at the sources of Phobos and do some experiments to locate the problem.

Yeah. I was in the middle of something so I was too lazy to go figure it out on my own, hence I posted it here. :)

> It seems your problem
> is caused by a CTFE bug, I will file it in bugzilla:

Thanks!