Min standard

std::strstreambuf::pbackfail

This protected virtual function is called by the public functions basic_streambuf::sungetc and basic_streambuf::sputbackc (which, in turn, are called by basic_istream::unget and basic_istream::putback).

# Declarations

protected:
virtual int_type pbackfail( int_type c = EOF );

(deprecated in C++98) (removed in C++26)

# Parameters

c: the character to put back, or Traits::eof() to indicate that backing up of the get area is requested

# Return value

c on success except if c was EOF, in which case unspecified value other than EOF is returned.

# Example

This section is incompleteReason: no example

# See also