[fpc-devel] Building trunk on Win32

[Sergei Gorelkin]

27.11.2011 19:10, Sven Barth пишет:
> On 27.11.2011 16:45, Sergei Gorelkin wrote:
>> The fact it works with DISABLE_TLS_DIRECTORY and fails otherwise
>> suggests that the foreign thread raises exceptions and FPC tries to
>> handle them. Error 255 is most likely caused by Halt(255) in
>> rtl/inc/except.inc line 200 or 303, these are the only places where RTL
>> can exit with code 255.
>> This is explainable: FPC won't have ExceptObjectStack or
>> ExceptAddressStack set up for the foreign thread, they will contain nil
>> values.
>>
>> But I don't imagine how it manages to work *without* TLS callbacks. The
>> difference is that RTL will remain in single-threaded mode, but
>> SetUnhandledExceptionFilter that is used to intercept exceptions is
>> AFAIK global and will still break in.
>
> Also interesting question: why does so far only Leonardo experience that problem? I myself have no
> problem building trunk on a Windows 7 machine using 2.4.4 as a starting compiler.
>
He has some software which creates threads in compiler process. Maybe something specific to VM, 
maybe something specific to server OS.
I also build trunk successfully on Windows XP (32bit) and Windows 7 (64bit), on both of them Process 
Explorer shows just a single thread in compiler process.

Another point to look at is webtbs/tw2423.pp, testsuite shows it fails consistently with RTE 226, 
while I have never seen it failing locally.

Sergei