Section: 31.7.5.3.3 [istream.extractors] Status: NAD Submitter: Matt Austern Opened: 1998-07-01 Last modified: 2017-04-22
Priority: Not Prioritized
View all other issues in [istream.extractors].
View all issues with NAD status.
Discussion:
27.6.1.2.3 has member functions for extraction of signed char and
unsigned char, both singly and as strings. However, it doesn't say
what it means to extract a char from a
basic_streambuf<charT, Traits>.
basic_streambuf, after all, has no members to extract a char, so basic_istream must somehow convert from charT to signed char or unsigned char. The standard doesn't say how it is to perform that conversion.
Rationale:
The Standard is correct as written. There is no such extractor and this is the intent of the LWG.