MultiPartInputFile::header doesn't check for out-of-bounds access

[anderslanglands]

Should it throw Iex::ArgExc? Or at least use at()?

openexr/src/lib/OpenEXR/ImfMultiPartInputFile.cpp

Line 194 in a00575f

const Header &

const Header & MultiPartInputFile::header(int n) const { return _data->_headers[n]; }

[peterhillman]

That seems sensible. All methods in MultiPartInputFile and MultiPartOutputFile that take a part number should do bounds checking. Throwing ArgExc would be better than just using at(), so a more informative error message can be thrown and negative values for n can be handled.