Then your compiler is generating incorrect code, or the debugger is
confused. And that certainly doesn't explain why you're getting a crash.
Dave
"Avula, Raj"
<RAvula@firstam. To: "'[EMAIL PROTECTED]'"
<[EMAIL PROTECTED]>
com> cc: (bcc: David N
Bertoni/Cambridge/IBM)
Subject: RE: problem with
XPathFunctionTable::DestroyTable()
03/25/2002 02:34
PM
Please respond
to xalan-dev
Hi Dave,
Thanks for the reply.
I understand that there is no difference in pre-inc & post-inc in this
case.
But by the time _f(*__first) is called, pointer is already incremented(goes
to second Function)
which leaves first Function* undeleted.
Raj..
> -----Original Message-----
> From: David N Bertoni/Cambridge/IBM
[SMTP:[EMAIL PROTECTED]]
> Sent: Monday, March 25, 2002 2:29 PM
> To: [EMAIL PROTECTED]
> Subject: Re: problem with XPathFunctionTable::DestroyTable()
>
>
> I don't think there's anything wrong with that implementation of for_each
> (). What "pre-increment" are you talking about? I see a for loop with
no
> for-init-statement, a valid condition, and an expression that increments
> __first. There no different between:
>
> for ( ; __first != __last; ++__first)
> __f(*__first);
>
>
> and
>
> for ( ; __first != __last; __first++)
> __f(*__first);
>
> except that using pre-increment is more efficient when an iterator is not
> a
> pointer.
>
>
> Segmentation fault in demangle.__dt__12FunctionNameFv at 0xd075c38c
> ($t1)
> 0xd075c38c (__dt__12FunctionNameFv+0x40) 807f0008 lwz
> r3,0x8(r31)
>
> I don't understand why the code is in a function beginning with
> "demangle".
> Is the some weird issue with the debugger? Put a breakpoint in the
> destructor of XPathFunctionTable and make sure it's not being entered a
> second time.
>
> I've built and tested the latest code on both xlC 3.6.6 and xlC 5.02 and
> had no problems, so something must be going on in your code.
>
> Dave
>
>
>
>
>
> "Avula, Raj"
>
> <RAvula@firstam. To:
> "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
>
> com> cc: (bcc: David N
> Bertoni/Cambridge/IBM)
>
> Subject: problem with
> XPathFunctionTable::DestroyTable()
>
> 03/25/2002 02:11
>
> PM
>
> Please respond
>
> to xalan-dev
>
>
>
>
>
>
>
>
> Hi,
>
> for_each(m_FunctionCollection.begin(),
> m_FunctionCollection.end(),
> DeleteFunctorType());
>
>
> The above call should be for deleting the vector of Function
> pointers(vector<Function*>).
> But if you see for_each function
> ----------------
> template <class _InputIter, class _Function>
> _Function for_each(_InputIter __first, _InputIter __last, _Function __f)
{
> for ( ; __first != __last; ++__first)
> __f(*__first);
> return __f;
> }
> ------------
>
> It is pre-incrementing Function pointer. So first one will not be
deleted.
>
> To my knowledge it looks like a leak.
> Here is the core. I am not sure, if the below core is related to the
above
> problem.
>
> Type 'help' for help.
> reading symbolic information ...
> [using memory image in core]
>
> Segmentation fault in demangle.__dt__12FunctionNameFv at 0xd075c38c ($t1)
> 0xd075c38c (__dt__12FunctionNameFv+0x40) 807f0008 lwz
r3,0x8(r31)
> (dbx) where
> demangle.__dt__12FunctionNameFv() at 0xd075c38c
> __cl__13DeleteFunctorXT8Function_CFPC8Function(0x2ff214c4, 0x2135affc) at
> 0xd45e511c
> for_each__FPP8FunctionT113DeleteFunctorXT8Function_(0x2ff214e0,
> 0x2139ef18,
> 0x2139ef90, 0xf21520f0) at 0
> xd44e8e94
> DestroyTable__18XPathFunctionTableFv() at 0xd471a3d4
> __dt__18XPathFunctionTableFv() at 0xd4719744
>
__sterm_x_2fhome_2fravula_2fxml_2fxml_2dxalan_2fc_2fsrc_2fXPath_2fXPath_2e
> cp
>
> p__Fi() at 0xd4714988
> __C_runtime_termination() at 0x10000680
> cuexit.exit(??) at 0xd0177c40
> doTransformation(const int)(0x2ff227d0, 0x2), line 108 in
> "CTestXSTransform.cc"
> unnamed block $b21, line 33 in "CXSTestMain.cc"
> main(argc = 1, argv = 0x2ff22868), line 33 in "CXSTestMain.cc"
> (dbx)
>
>
> Thanks,
> Raj..
>
>
>
>
>
"MMS <firstam.com>" made the following
annotations on 03/25/02 14:35:36
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