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With the call LLVMInitializeX86TargetInfo, the llvm DLL will be
initialized before DllMain of your DLL is called. I could not find a
matching DLL in the LLVM binary distribution. I guess you have built
it yourself. Could you provide it for download somewhere?<br>
<br>
On 06.09.2011 07:52, Sönke Ludwig wrote:
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type="cite">
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Am 05.09.2011 23:53, schrieb Rainer Schuetze:
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On 05.09.2011 21:35, Sönke Ludwig wrote:
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cite="mid:4E65247F.2090705@informatik.uni-luebeck.de"
type="cite">
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Am 05.09.2011 19:54, schrieb Rainer Schuetze:
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What OS are you running on? <br>
<br>
Your code works for me (XP SP3). Also Visual D works fine
AFAICT (its a plugin DLL to VS).<br>
<br>
</blockquote>
Windows 7 x64 SP1... But it is more complicated than it
seemed.<br>
<br>
I had another file linked to the DLL that I thought had not
effect. But actually it used a function from another DLL* that
was linked in statically via passing a .lib file to the
command line (along with the source files). The error does not
occur if compiling and linking is done by separate invocations
of dmd. Also commenting out all the lines that use a function
from the external DLL fixes the problem.<br>
<br>
(* that DLL is LLVM 2.9, so no D code inside)<br>
<br>
<br>
</blockquote>
<br>
There might be issues if you are calling another DLL from inside
the (non-shared) static constructors and that DLL also uses TLS.
In DllMain(DLL_PROCESS_ATTACH), each existing thread is
initialized by just swapping the TLS data of the DLL and then
running the module initialization. So if another DLL is called,
it will only see the TLS of the thread that called DllMain.<br>
<br>
I don't think anything in this code has changes recently. Is
this a regression from the last dmd version?<br>
<br>
<br>
<br>
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</blockquote>
Yes, it is a regression in the first beta. The new beta also has
it.<br>
<br>
In general, the LLVM DLL was not called at all before the error
occurs, the pure fact that there was a dependency to it somewhere
in the code causes the problem. Also, it doesn't matter whether
the array is used somwhere inside of DllMain or later from within
an exported function (this was actually the case before I tried to
strip it down). There is just one static constructor in the code.
Commenting it out does not affect the problem.<br>
<br>
I now completely removed any other code and just put in one
function call after the array appending line. Commenting out the
llvm call will cause the array to be correctly
initialized/referenced, otherwise it contains garbage in its
ptr/length fields. (making it __gshared also fixes it)<br>
<br>
The llvm.lib containing the llvm functions was generated from the
dll using implib.<br>
<br>
---<br>
import std.c.windows.windows;<br>
import core.sys.windows.dll;<br>
<br>
import llvm.target;<br>
int[] test;<br>
<br>
extern (Windows)<br>
BOOL DllMain(HINSTANCE hInstance, ULONG ulReason, LPVOID
pvReserved) <br>
{ <br>
switch (ulReason) {<br>
default: return false;<br>
case DLL_PROCESS_ATTACH:<br>
if( !dll_process_attach( hInstance, true ) ) return
false;<br>
test ~= 1; // throws out of memory<br>
LLVMInitializeX86TargetInfo(); // commenting out this
will make it work<br>
break;<br>
case DLL_PROCESS_DETACH: dll_process_detach( hInstance,
true ); break;<br>
case DLL_THREAD_ATTACH: dll_thread_attach( true, true );
break;<br>
case DLL_THREAD_DETACH: dll_thread_detach( true, true );
break;<br>
}<br>
return true;<br>
}<br>
---<br>
<br>
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