http://d.puremagic.com/issues/show_bug.cgi?id=4009

           Summary: OPTLINK ruins the day yet again
           Product: D
           Version: future
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: regression
          Priority: P2
         Component: Optlink
        AssignedTo: nobody@puremagic.com
        ReportedBy: nfxjfg@gmail.com


--- Comment #0 from nfxjfg@gmail.com 2010-03-26 04:27:51 PDT ---
Compile the following source code with dmd x.d -g

OPTLINK will crash:

Unexpected OPTLINK Termination at EIP=0041338F

EAX=6F733231 EBX=6F733231 ECX=00000000 EDX=1D8CC66F ESI=0033FE7C EDI=1D8CC66F EBP=0033FED4 ESP=0033FD60 First=0042000

(copied by hand)

It doesn't crash without -g. It doesn't crash when you reduce the number of template instantiations, or reduce the references to instantiated templates (you can vary these by changing the numbers in the program).

Bug 3870 is probably the same bug, but I can't possibly know (the register contents are completely different).

The test case works perfectly fine on Linux.

---- this is file x.d:
template Tuple(T...) {
    alias T Tuple;
}

template Repeat(int count) {
    static if (!count) {
        alias Tuple!() Repeat;
    } else {
        alias Tuple!(count-1, Repeat!(count-1)) Repeat;
    }
}

void sometemplate(int T)() {
    foreach (x; Repeat!(62)) {
        sometemplate!(T)();
    }
}

void main() {
    foreach (x; Repeat!(298)) {
        sometemplate!(x)();
    }
}

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--- Comment #1 from nfxjfg@gmail.com 2010-03-29 18:18:20 PDT ---
Funny thing: if I name _exactly_ the same file x2.d, OPTLINK doesn't crash!

copy x.d x2.d
dmd x.d -g      -- OPTLINK crashes
dmd x2.d -g     -- OPTLINK doesn't crash

Let me repeat: this bug is not reproduceable if you change the filename.

Makes me wonder what the flying fuck is going on.

(Maybe I should mention that I did this under wine on Linux, but I also had someone reproduce the crash on a real Windows.)

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Max Samukha <samukha@voliacable.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |samukha@voliacable.com


--- Comment #2 from Max Samukha <samukha@voliacable.com> 2010-03-30 00:32:55 PDT ---
I think it has something to do with module names being part of symbol names. When you change the file name the symbol names change as well.

FWIW, my development branch of QtD (compiled with dmd 2.042) doesn't link on Windows. This bug may be the cause.

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--- Comment #3 from nfxjfg@gmail.com 2010-05-07 06:00:12 PDT ---
In dmd 1.060, the example above doesn't crash anymore, but this does:
------- x.d
template Tuple(T...) {
    alias T Tuple;
}

template Repeat(int count) {
    static if (!count) {
        alias Tuple!() Repeat;
    } else {
        alias Tuple!(count-1, Repeat!(count-1)) Repeat;
    }
}

void sometemplate(int T)() {
    foreach (x; Repeat!(320)) {
        sometemplate!(T)();
    }
}

void main() {
    foreach (x; Repeat!(498)) {
        sometemplate!(x)();
    }
}
-------
wine dmd x.d -g

Unexpected OPTLINK Termination at EIP=0041338F

EAX=0200000A EBX=0200000A ECX=00000000 EDX=65D474DD ESI=0033FE7C EDI=65D474DD EBP=0033FED4 ESP=0033FD60 First=00402000

There's lots of similarities in the test case and register dump, so I suppose it's the same bug.

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nfxjfg@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |link-failure
           Priority|P2                          |P1


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--- Comment #4 from nfxjfg@gmail.com 2010-05-31 13:09:20 PDT ---
Does anyone know what Walter thinks about this?
When can we expect a fix?

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Eldar Insafutdinov <e.insafutdinov@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |e.insafutdinov@gmail.com


--- Comment #5 from Eldar Insafutdinov <e.insafutdinov@gmail.com> 2010-05-31 13:20:31 PDT ---
(In reply to comment #4)
> Does anyone know what Walter thinks about this?
> When can we expect a fix?

Same question. This bug(or a similar one) has been a pain for building QtD on Windows. It occurs or it doesn't depending on some unrelated factors.

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla@digitalmars.com


--- Comment #6 from Walter Bright <bugzilla@digitalmars.com> 2010-08-25 12:31:20 PDT ---
I can reproduce it, it appears to be related to the -g switch. The object file is very large, it perhaps is caused by a counter overflow.

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


--- Comment #7 from Walter Bright <bugzilla@digitalmars.com> 2010-09-01 01:08:56 PDT ---
Fixed with link 8.00.6

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Tomasz Stachowiak <h3r3tic@mat.uni.torun.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |h3r3tic@mat.uni.torun.pl


--- Comment #8 from Tomasz Stachowiak <h3r3tic@mat.uni.torun.pl> 2010-09-01 04:07:12 PDT ---
(In reply to comment #7)
> Fixed with link 8.00.6

I haven't tested against this very example, but your latest patch also seems to fix a crash at a different EIP I've been getting since the last few days (repro too large):

EIP=00425343
EAX=0001B04C EBX=00000202 ECX=00000004 EDX=01160000
ESI=0043B544 EDI=01164000 EBP=0012FFF0 ESP=0012FF7C
First=00402000

If this is true and not just a random magical arrangement of electrons and planets, I might arrange a little party tonight O_O

Much appreciated!

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