diff options
author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2004-11-28 16:31:12 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2004-11-28 16:31:12 +0000 |
commit | 4c97d899576a380680a6f852a6758a495a53503f (patch) | |
tree | 600d5c5c91f702b17a5b71b00edb4210e89aa65d /io.c | |
parent | 3c5b1c71107b43f45dcc640a5293319bb22ba527 (diff) |
* io.c (rb_io_check_writable): restrict io_seek by
READ_DATA_PENDING because io_seek(fptr, 0, SEEK_CUR) is
meaningful only if read buffer is not empty.
call io_seek regardless of NEED_IO_SEEK_BETWEEN_RW.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@7404 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'io.c')
-rw-r--r-- | io.c | 5 |
1 files changed, 2 insertions, 3 deletions
@@ -251,11 +251,10 @@ rb_io_check_writable(fptr) if (!(fptr->mode & FMODE_WRITABLE)) { rb_raise(rb_eIOError, "not opened for writing"); } -#if NEED_IO_SEEK_BETWEEN_RW - if ((fptr->mode & FMODE_RBUF) && !feof(fptr->f) && !fptr->f2) { + if ((fptr->mode & FMODE_RBUF) && !feof(fptr->f) && !fptr->f2 && + READ_DATA_PENDING(fptr->f)) { io_seek(fptr, 0, SEEK_CUR); } -#endif if (!fptr->f2) { fptr->mode &= ~FMODE_RBUF; } |