diff options
Diffstat (limited to 'libc/stdio/ftello.c')
| -rw-r--r-- | libc/stdio/ftello.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libc/stdio/ftello.c b/libc/stdio/ftello.c index 4445471a4..bae1d877c 100644 --- a/libc/stdio/ftello.c +++ b/libc/stdio/ftello.c @@ -39,7 +39,10 @@ OFFSET_TYPE FTELL(register FILE *stream) __STDIO_STREAM_VALIDATE(stream); - if ((__SEEK(stream, &pos, SEEK_CUR) < 0) + if ((__SEEK(stream, &pos, + ((__STDIO_STREAM_IS_WRITING(stream) + && (stream->__modeflags & __FLAG_APPEND)) + ? SEEK_END : SEEK_CUR)) < 0) || (__stdio_adjust_position(stream, &pos) < 0)) { pos = -1; } |