diff options
Diffstat (limited to 'stdio-common')
| -rw-r--r-- | stdio-common/vfprintf.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c index 78a1c77d8a..714c76c3d4 100644 --- a/stdio-common/vfprintf.c +++ b/stdio-common/vfprintf.c @@ -2080,8 +2080,11 @@ _IO_helper_overflow (_IO_FILE *s, int c) { _IO_size_t written = _IO_sputn (target, s->_wide_data->_IO_write_base, used); - if (written == 0) + if (written == 0 || written == WEOF) return WEOF; + __wmemmove (s->_wide_data->_IO_write_base, + s->_wide_data->_IO_write_base + written, + used - written); s->_wide_data->_IO_write_ptr -= written; } #else @@ -2089,8 +2092,10 @@ _IO_helper_overflow (_IO_FILE *s, int c) if (used) { _IO_size_t written = _IO_sputn (target, s->_IO_write_base, used); - if (written == 0) + if (written == 0 || written == EOF) return EOF; + memmove (s->_IO_write_base, s->_IO_write_base + written, + used - written); s->_IO_write_ptr -= written; } #endif |