id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11146	iostreams seekpos/seekoff must not throw exceptions	stheophil@…	Jonathan Turkanis	"Currently, `direct_streambuf<T, Tr>::seek_impl` throws `bad_seek()` exception on invalid input.

The current standard draft N4296 says in section 27.8.2.4 about `seekoff`:

''If the positioning operation fails, or if the constructed object cannot represent the resultant stream position, the return value is pos_type(off_type(-1)).''

At least the MSVC STL implementation does not expect pubseekoff/seekoff to throw, thus does not catch the exception and the bad_seek() exception may leak to the caller even though ios_base::exceptions() is 0.
"	Bugs	new	To Be Determined	iostreams	Boost 1.57.0	Problem