On 13/01/2011 14:14, Joost van der Sluis wrote:
>> TCmdLineDebugger.SendCmdLn "-data-evaluate-expression
^^shortstring(^POINTER($eax)^+12)^^"
<< TCmdLineDebugger.ReadLn "^done,value="#0<repeats 20 times>""
<< TCmdLineDebugger.ReadLn "(gdb) "
You do realize that this is an hack? (I partly wrote it)
It could also be that the location of the exception-name has been
changed by something. This hack doesn't use any debug-information. Only
the definitions of a shortstring and pointer.
I do, yes...
But:
- I know eax is correct, because the fall-back (using ^char instead of
shortstring works:
-data-evaluate-expression ^char(^pointer(^POINTER($eax)^+12)^+1)
The fallback does work. So the data is in the correct location
- The fallback is usually needed, if shortstring is not in the
symboltable at all, but then the expression gives an error. Now the
expression returns data, but the wrong data...
Ehh? Does the fallback work or not?
yes, but it was not triggered, because the first query did not return a
gdbg-error, there just was no usable data.
I added the data check, so now the fallback is triggered, and it works.
Strange, the same fpc on windows still works perfect with half a dozen
different fpc versions (6.3 to 7.2)
So it could be a gdb-problem?
possible, yes, strange though
afaik "shortstring" is encoded as a record (len; chars), so maybe
something in there...
It is also possible that my previous fpc trunk on my fedora box was
build with some debug ino, and now I forgot, and just build it... but
again on windows I tested with fpc 2.4.2 and trunc, both build with
several different configs...
You lost me. Do I still have to do something?
probably not, because there is not enough info yet to start on something.
I was just asking if something obvious springs to mind....
I currently don't have the time to go through all the options and see
what works and what not.
e.g compile rtl with/whitout -gs / -gw
or check older versions, ...
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