[Met_help] possible error in METv1.1

[John Halley Gotway]

Matt,

I looked through the vx_met_util library and added a print statement to the "get_column_format()" to dump the length of the "fmt_str".  The length of the "fmt_str" variable varies depending on the
line type, but here are the values I found: 35, 41, 47, 53, 65, 365, 371, 437

And all of them are under 512 (max_str_len).  Perhaps something else is going on here.  I notice that 730 is exactly 2 * 365, which is one of the sting lengths I encountered.

Can you tell me what OS you're running MET on?

Thanks,
John Halley-Gotway
johnhg at ucar.edu

J Matt Clark wrote:
> 
> Sirs:
> 
> I have installed and run METv1.1, and discovered a possible error in the
> grid_stat function,
> Reference ./lib/vx_met_util:
> 
> In vsdb_columns.cc,  fimction get_column_format is called to build
> fmt_str, which is defined
> 
> char fmt_str[max_str_len];
> 
> and max_str_len is defined in constants.h:
> 
> static const int max_str_len  = 512;
> 
> However, get_column_format appears to pack 730 or so characters into
> char_fmt_str - which overflows and
> eventually causes a seg fault.
> 
> Tnx,
> 
> Matt
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