diff options
Diffstat (limited to 'libstdc++-v3/config/io/basic_file_stdio.cc')
| -rw-r--r-- | libstdc++-v3/config/io/basic_file_stdio.cc | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/libstdc++-v3/config/io/basic_file_stdio.cc b/libstdc++-v3/config/io/basic_file_stdio.cc index a3ed8391bff..680220bc4c5 100644 --- a/libstdc++-v3/config/io/basic_file_stdio.cc +++ b/libstdc++-v3/config/io/basic_file_stdio.cc @@ -189,10 +189,17 @@ namespace std __basic_file* __ret = NULL; if (!this->is_open() && __file) { - _M_cfile = __file; - _M_cfile_created = false; - this->sync(); - __ret = this; + int __err; + errno = 0; + do + __err = this->sync(); + while (__err && errno == EINTR); + if (!__err) + { + _M_cfile = __file; + _M_cfile_created = false; + __ret = this; + } } return __ret; } @@ -252,12 +259,23 @@ namespace std __basic_file* __ret = static_cast<__basic_file*>(NULL); if (this->is_open()) { + // In general, no need to zero errno in advance if checking + // for error first. However, C89/C99 (at variance with IEEE + // 1003.1, f.i.) do not mandate that fclose/fflush must set + // errno upon error. + int __err; + errno = 0; if (_M_cfile_created) - fclose(_M_cfile); + do + __err = fclose(_M_cfile); + while (__err && errno == EINTR); else - this->sync(); + do + __err = this->sync(); + while (__err && errno == EINTR); + if (!__err) + __ret = this; _M_cfile = 0; - __ret = this; } return __ret; } |
