Hi,
I compiled and linker a program -debug and the linker crashed.
If I use -release flag , then the linker does not crash but then the program crashes.
The program uses CTFE which may have to do with the crash.
Comment #1 by anteusz — 2009-11-23T04:39:21Z
Created attachment 515
the picture of the error
Comment #2 by anteusz — 2009-11-23T04:41:33Z
The program uses a large compile-time generated function which seems to
contribute to the problem.
Comment #3 by clugdbug — 2009-11-23T07:08:37Z
The picture doesn't help at all. You need to provide a source file which will reproduce the error.
Comment #4 by anteusz — 2009-11-24T04:45:08Z
Created attachment 516
one file that causes the problem
this if compiled as
dmd.exe -g compilerfailuretest.d
will produce the error.
Note download this file too:http://www.dsource.org/projects/scregexp/browser/trunk/scregexp.d
That file is needed to place it in the same directory where compilerfailuretest.d is located.
Comment #5 by clugdbug — 2009-11-24T05:00:29Z
(In reply to comment #4)
> Created an attachment (id=516) [details]
> one file that causes the problem
>
> this if compiled as
>
> dmd.exe -g compilerfailuretest.d
>
> will produce the error.
> Note download this file
> too:http://www.dsource.org/projects/scregexp/browser/trunk/scregexp.d
> That file is needed to place it in the same directory where
> compilerfailuretest.d is located.
Thanks, I can reproduce the bug now.
Comment #6 by anteusz — 2009-11-24T05:04:37Z
it is possible to influence the occurance of the error by
reducing the size of
the statement ...auto perlreg = new screg!("/(?:(?<tok>\\#(?:.*?(?:"~eol~")|.*\\z))|
(?<tok>\"(?:(?>\\\\\\\\|\\\\\"|.))*?\")|
when parameter is smaller, the error does not occur.
Comment #7 by clugdbug — 2009-11-24T06:22:39Z
Created attachment 517
Somewhat reduced test case.
This cuts it down to a single, self-contained file. (Funny -- I recognize my own code in there -- almost all the comments are mine!) There's plenty of work still to be done in cutting in right down.
Comment #8 by clugdbug — 2009-11-25T05:16:07Z
Completely reduced test case shows it's due to nested functions.
----------
char[] foo(int n) {
if (n == 0) return "void xxxx() {}";
return "void xxxx() { void yyyy() { }" ~ foo(n-1) ~ "}";
}
mixin (foo(400));
Comment #9 by clugdbug — 2009-11-25T05:29:15Z
Even smaller test case. Seems it happens with a depth around 512; it's probably exceeding the maximum symbol length.
---
char[] foo(int n) {
return "void abcde() {" ~ ( n>0 ? foo(n-1): "") ~ "}";
}
mixin (foo(500));
Comment #10 by bugzilla — 2009-11-30T02:03:52Z
The test case is crashing in dmd, not optlink. It's a stack overflow.
Comment #11 by anteusz — 2009-12-12T00:06:04Z
Hi,
Should I repost my example?
Comment #12 by clugdbug — 2010-01-13T00:46:23Z
(In reply to comment #10)
> The test case is crashing in dmd, not optlink. It's a stack overflow.
If you compile in debug mode, it crashes in DMD. If you compile in release mode, it crashes in OPTLINK.
Comment #13 by anteusz — 2010-02-11T05:23:05Z
Hi,
What should I do so it gets fixed? I mean this bug.
I reported this in November.
Comment #14 by clugdbug — 2010-02-11T08:33:38Z
(In reply to comment #13)
> Hi,
>
> What should I do so it gets fixed? I mean this bug.
> I reported this in November.
This is in the queue of critical but hard-to-fix and relatively obscure bugs. It is a few months away from being fixed.
Note that when it gets 'fixed', it will generate a compile-time error rather than a link-time one. Bug 2315 is basically the same issue. I don't see any solution other than imposing a limit on CTFE recursion. So don't get the idea that the code will ever 'work'. It'll just fail more nicely.
Comment #15 by anteusz — 2010-02-11T09:09:12Z
A clear error message would suffice. How could I expect more?
It would not be bad if the stack size for ctfre could be set?
Is there a way to set the stack size for ctfe??
Comment #16 by anteusz — 2010-02-11T09:09:56Z
A clear error message would suffice. How could I expect more?
It would not be bad if the stack size for ctfre could be set?
Is there a way to set the stack size for ctfe??
Comment #17 by bugzilla — 2010-09-01T19:01:47Z
I cannot reproduce this problem. Please show exactly what commands are given to dmd and the linker.
Comment #18 by clugdbug — 2010-09-01T23:55:47Z
(In reply to comment #17)
> I cannot reproduce this problem. Please show exactly what commands are given to
> dmd and the linker.
dmd -g bug.d
This was crashing with DMD2.048 and link 8.00.2.
I have confirmed that link 8.00.6 fixed this. (And it's stayed fixed in 8.00.7).
