[Proj] possible memory leak in pj_free ??

[dettling at ucar.edu]

Hi Frank,
The systems administrators assure me we have the latest version.
Do you know if this fix got into the latest debian linux proj package.
Thanks for your response.

S.


> Sue Dettling wrote:
>> Hi,
>> I am using the debian linux (etch) version of proj.
>> I instantiate a projection object with the following:
>>
>> if ( (_inputProj = pj_init(6,inputPrjArgs )) == NULL)
>>   {
>>     cerr << "ProjInfo::_projectData(): ERROR: Failed to initialize
>> Proj.4 "
>> 	 << "projection object." << endl;
>>     return(1);
>>   }
>>
>> where inputPrjArgs[] = {"proj=laea", "lat_0=38", "lon_0=-98", "x_0=0",
>> "y_0=0", "units=m"}.
>>
>> It seems to work fine based on output data.
>>
>> I free the projection with:
>>
>> if (_inputProj)
>>     pj_free(_inputProj);
>>
>> In stepping through with a debugger I see that the pj_free call is made
>> however when using valgrind to check for memory leaks I get:
>>
>> =17191== 48 bytes in 2 blocks are definitely lost in loss record 1 of 1
>> ==17191==    at 0x401D38B: malloc (vg_replace_malloc.c:149)
>> ==17191==    by 0x41ECB2B: pj_malloc (in /usr/lib/libproj.so.0.5.0)
>> ==17191==    by 0x41EA5EF: pj_authset (in /usr/lib/libproj.so.0.5.0)
>> ==17191==    by 0x41CD4A9: pj_laea (in /usr/lib/libproj.so.0.5.0)
>> ==17191==    by 0x41EC577: pj_init (in /usr/lib/libproj.so.0.5.0)
>> ==17191==    by 0x805C505: ProjInfo::_initializeProj4()
>> (ProjInfo.cc:453)
>> ==17191==    by 0x805E51F: ProjInfo::init() (ProjInfo.cc:84)
>> ==17191==    by 0x8052449: NcfReader::_getGriddedData()
>> (NcfReader.cc:683)
>> ==17191==    by 0x8052FD0: NcfReader::readFile() (NcfReader.cc:169)
>> ==17191==    by 0x80504B5: NetCDF2Mdv::_processData(char*)
>> (NetCDF2Mdv.cc:211)
>> ==17191==    by 0x80509D9: NetCDF2Mdv::Run() (NetCDF2Mdv.cc:173)
>> ==17191==    by 0x804F51D: main (Main.cc:67)
>>
>>
>> Are there any known or possible leaks with pj_free ?
>
> Sue,
>
> I suspect you are seeing the issue fixed in this changelog entry.
>
> 2007-04-04  Frank Warmerdam  <warmerdam at pobox.com>
>
> 	* src/PJ_laea.c: Fix memory leak of apa field.
>
> Best regards,
> --
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam,
> warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | President OSGeo, http://osgeo.org
>
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