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Re: 20030812:Memory leak 3.5.1Beta12

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  • Subject: Re: 20030812:Memory leak 3.5.1Beta12
  • Date: Wed, 13 Aug 2003 09:43:09 -0600
>To: <address@hidden>
>From: "Doherty, Alastair" <address@hidden>
>Subject: Memory leak
>Organization: Agricultural Production Systems Research Unit / DPI
>Keywords: 200308120115.h7C1FDLd028258

Hi Al,

> I have just made a c++ dll of the new NetCDF version 3.5.1Beta12 and
> linked it to an application that I have created and there is a
> memory leak that wasn't present in version 3.5.0.
> 
> It should be easy to trace as it compounds by creating and deleting
> NcFile objects.

You're right, I just duplicated the problem:

  Checking for memory leaks...

  Actual leaks report    (actual leaks:         1  total size:    2048 bytes)

   Total  Num of  Leaked      Allocation call stack
   Size   Blocks  Block
                  Address
  ======  ====== ==========  =======================================
    2048       1    0xdb1a0  operator new < NcVar::init_cur < NcVar::NcVar < 
NcFile::NcFile < main 

and this did not occur in 3.5.0.

> Any suggestions?

I think the fix is the following one-line addition to cxx/netcdf.cpp:

*** 505,510 ****
--- 505,511 ----
  NcVar::~NcVar( void )
  {
      delete[] the_cur;
+     delete[] cur_rec;
      delete[] the_name;
  }

I'll include this in the next beta release.  Thanks for reporting the
bug!

--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
address@hidden                      http://my.unidata.ucar.edu