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[netCDF #YFC-341618]: Memory leak in NetCDF


Thanks for the report; it should of course be possible to get rid of the memory 
leak, assuming we can identify it properly.  Can you tell me what version of 
the fortran and underlying C libraries you are using?


> Dear Unidata support,
> We encountered a memory leak in a NetCDF interface for Fortran 90. The
> memory leak occurs when a there is an attribute that is a compound that
> contains a string. The memory is leaked when just opening and closing
> the file with nf90_open and nf90_close. Below, I will give an NCDUMP
> output of a small leaking NetCDF file.
> We already contacted the HDF5 support and the memory leak does not occur
> when reading the same file with just the HDF5 interface.
> For development, however, we prefer the nf90-interface above the
> h5-interface.  Is there a possibility to get rid of the memory leak with
> the nf90-interface?
> NCDUMP output of a leaking NetCDF file:
> netcdf memory_leak {
> types:
> compound cmp {
> string content1 ;
> string content2 ;
> }; // cmp
> variables:
> float var ;
> cmp var:att = {"example", "X"} ;
> data:
> var = 5.2 ;
> }
> When opening and closing the file, 10 bytes of memory are leaked, equal
> to the sum of the string lengths (including termination characters).
> Thanks in advance,
> Joost

Ticket Details
Ticket ID: YFC-341618
Department: Support netCDF
Priority: Normal
Status: Closed

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