[Issue 20560] New: dom.d ctfe crashes compiler

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20560

          Issue ID: 20560
           Summary: dom.d ctfe crashes compiler
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: destructionator at gmail.com

import arsd.dom;

string translate(string xml) {
        auto document = new Document(xml, true, true);
        foreach(p; document.querySelectorAll("p"))
                p.addClass("paragraph");
        return document.toString();
}

enum e = translate("<xml><p>cool</p></xml>");


got segmentation fault when i try `dmd -c test.d` Specifically the `addClass`
method (among several other methods).

dom.d is here: https://github.com/adamdruppe/arsd/blob/master/dom.d

I haven't been able to reduce it more yet. The methods work on their own, e.g.

---
import arsd.dom;

string translate(string xml) {
        auto e = new Element("test");
        e.addClass("foo");
        return e.toString;
}

enum e = translate("<xml><p>cool</p></xml>");

pragma(msg, e);
---

works fine. So I suspect the problem is actually because of me trying to work
with it in a deeper manner.

        auto document = new Document(xml, true, true);
        auto p = document.querySelector("p");

gave an error in a CTFE context

arsd/dom.d(7413): Error: variable relativeTo cannot be read at compile time
arsd/dom.d(7413):        called from here: this.matchesElement(a, relativeTo)
/home/me/d/dmd2/linux/bin64/../../src/phobos/std/algorithm/iteration.d(1330):
     called from here: __lambda3(this._input.front())
/home/me/d/dmd2/linux/bin64/../../src/phobos/std/algorithm/iteration.d(1356):
     called from here: this.prime()
arsd/dom.d(1226):        called from here: __r518.empty()
dam.d(6):        called from here: document.querySelector("p")
dam.d(12):        called from here: translate("<xml><p>cool</p></xml>")
dam.d(14):        while evaluating pragma(msg, e)


and relativeTo is a regular local variable so this feels weird too. but
probably separate.



* * *

so back to the main thing

import arsd.dom;

string translate(string xml) {

        auto document = new Document(xml, true, true);
        auto p = document.querySelectorAll("p")[0];
        return p.toString;
}

enum e = translate("<xml><p>cool</p></xml>");


that's fine. so it can apparently get the object.


idk what's going on just want to report anyway.

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