_Stold() writes to input string on certain inputs

[kwl7@…]

Using the latest SVN (and back at least as far as 1.3.2) calling _Stold() - and indirectly through CPLStrtof() - with certain ill-formatted strings will result in letters being written to that source string.  For example, the following code:

char szTest[] = { '1', '.', '2', 'E', '+', '\0', 'H', 'i', '\0' };
std::cout << szTest << "\n";
CPLStrtof( szTest, NULL );
std::cout << szTest << "\n";

Will print:

1.2E+
1.2E+EHi

Where the null character at the end of the ill-formatted number is overwritten with an 'E'.  I believe this happens at line 463 of cpl_strtod.cpp (in SVN).  I would have included a patch, but I am not sure why that assignment is there.  Hopefully you know and have some idea of how to fix it.  ;)

Thanks,
Kevin