_ioserr.h

symbian 上的stl_port进过编译的。

/*
 * This file is included in every header that needs the STLport library to be
 * built; the header files mostly are the iostreams-headers. The file checks for
 * _STLP_USE_NO_IOSTREAMS or _STLP_NO_IOSTREAMS being not defined, so that the
 * iostreams part of STLport cannot be used when the symbols were defined
 * accidentally.
 */
#if defined (_STLP_NO_IOSTREAMS)
#  error STLport iostreams header cannot be used; you chose not to use iostreams in the STLport configuration file (stlport/stl/config/user_config.h).
#elif defined (_STLP_USE_NO_IOSTREAMS )
#  error STLport iostreams header cannot be used; your compiler do not support it.
#endif