[gdal-dev] Resizing CPLErrorContext?

[Even Rouault]

On mardi 16 mai 2017 10:26:09 CEST Kurt Schwehr wrote:
> I now know this is referred to as the "struct hack."
> 
> This really is undefined behavior in the C++11 standard...  

Well, I don't think the hack is really needed and char szLastErrorMsg[] could be 
replaces by a char* pszLastErrorMsg that would be malloc'ated.
The current situation comes from the fact that originally no custom free function 
could be associated with a TLS member, but now that we have a
CPLSetTLSWithFreeFunc() we could use it to free the pszLastErrorMsg member 
before freeing the context.

(or use std::string if you prefer, but this code portion can be run under very low 
memory conditions, so great care is needed)

-- 
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