diff options
Diffstat (limited to 'libio/libio.h')
| -rw-r--r-- | libio/libio.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/libio/libio.h b/libio/libio.h index c3dd640b2f..410794f77c 100644 --- a/libio/libio.h +++ b/libio/libio.h @@ -287,10 +287,23 @@ extern int __overflow __P ((_IO_FILE *, int)); && __underflow (_fp) == EOF ? EOF \ : *(unsigned char *) (_fp)->_IO_read_ptr) -#define _IO_putc_unlocked(_ch, _fp) \ +#ifdef __GNUC__ +# define _IO_putc_unlocked(_ch, _fp) \ + (__extension__ \ + ({ unsigned char _chl = (_ch); \ + (((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end \ + || (_chl == '\n' && ((_fp)->_flags & _IO_LINE_BUF))) \ + ? __overflow (_fp, (unsigned char) _chl) \ + : (unsigned char) (*(_fp)->_IO_write_ptr++ = _chl)); })) +#else +# define _IO_putc_unlocked(_ch, _fp) \ (((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \ ? __overflow (_fp, (unsigned char) (_ch)) \ - : (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch))) + : ((unsigned char) (*(_fp)->_IO_write_ptr = (_ch)) == '\n' \ + && ((_fp)->_flags & _IO_LINE_BUF) \ + ? __overflow (_fp, (unsigned char) *(_fp)->_IO_write_ptr) \ + : (unsigned char) (*(_fp)->_IO_write_ptr++))) +#endif #define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0) #define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0) |