Rainer Stratmann wrote:
Am Tuesday 11 September 2012 18:14:57 schrieb Mark Morgan Lloyd:
Martin wrote:
On 11/09/2012 10:28, Rainer Stratmann wrote:
I found out that there is no line information shown (-gl) if an error
occurs
(more or less shortly) after the program loads a dynamic library.
This same behaviour happens with fpc version 2.4.2-0 and 2.6.0.
If no library is loaded line information is shown.
The error adresses are the same in both cases.
How is the library being loaded: using FPC's dynlibs unit?
Yes.
If using dynlibs, is the problem immediately after loading the library
(.so) or is it on a call of an entry point in the library?
Immediately after loading the library.
In which case I presume that you could comment out the calls to the
entry points in the library and duplicate the problem (have you tried
this?). Does the recently-added GetLoadError() function tell you
anything useful?
Is the DLL successfully called, does it exit predictably, and does the
stack recover to the state it was on entry (i.e. without an extra or
missing word)?
The program restarts some times and there is no error.
If it's specifically something that happens at load time then below
probably isn't relevant.
Stack recovery I don't know. I think it will be ok. How can I see that?
Inline assembler to dump esp and ebp.
I use loadlibrary and freelibrary.
There are only 3 functions/procedures calling from the program. (init_proc,
loop_proc, exit_proc).
The library calls back a procedure (add a key to a keybuffer) but in this
procedure there is no error.
I tried safeloadlibrary but the same thing.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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