diff options
author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-23 15:22:18 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-23 15:22:18 +0000 |
commit | 19fee2e2e075950120573f4063b22fb8082fad0e (patch) | |
tree | 604fbfd93af1928bce3979d5561190412a3a3f19 /io.c | |
parent | b54087529e8f4258068199e3a033f67ec8229014 (diff) | |
download | ruby-19fee2e2e075950120573f4063b22fb8082fad0e.tar.gz |
* io.c (rb_io_init_copy): call io_seek only if io_tell succeeds.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20954 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'io.c')
-rw-r--r-- | io.c | 5 |
1 files changed, 4 insertions, 1 deletions
@@ -5368,6 +5368,7 @@ rb_io_init_copy(VALUE dest, VALUE io) rb_io_t *fptr, *orig; int fd; VALUE write_io; + off_t pos; io = rb_io_get_io(io); if (dest == io) return dest; @@ -5386,7 +5387,9 @@ rb_io_init_copy(VALUE dest, VALUE io) fd = ruby_dup(orig->fd); fptr->fd = fd; - io_seek(fptr, io_tell(orig), SEEK_SET); + pos = io_tell(orig); + if (0 <= pos) + io_seek(fptr, pos, SEEK_SET); if (fptr->mode & FMODE_BINMODE) { rb_io_binmode(dest); } |