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-rw-r--r--libio/genops.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libio/genops.c b/libio/genops.c
index 42419bf..c86adee 100644
--- a/libio/genops.c
+++ b/libio/genops.c
@@ -368,7 +368,7 @@ _IO_doallocbuf (fp)
{
if (fp->_IO_buf_base)
return;
- if (!(fp->_flags & _IO_UNBUFFERED))
+ if (!(fp->_flags & _IO_UNBUFFERED) || fp->_mode > 0)
if (_IO_DOALLOCATE (fp) != EOF)
return;
_IO_setb (fp, fp->_shortbuf, fp->_shortbuf+1, 0);