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-rw-r--r--lib/libc/stdio/setvbuf.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/libc/stdio/setvbuf.c b/lib/libc/stdio/setvbuf.c
index 1928ae14160b..78e616387269 100644
--- a/lib/libc/stdio/setvbuf.c
+++ b/lib/libc/stdio/setvbuf.c
@@ -137,11 +137,14 @@ nbf:
flags |= __SLBF;
if (flags & __SRW)
flags &= ~(__SRD | __SWR);
- fp->_w = 0;
fp->_flags = flags;
fp->_bf._base = fp->_p = (unsigned char *)buf;
fp->_bf._size = size;
fp->_lbfsize = 0;
+ if (flags & __SWR)
+ __swsetup(fp);
+ else
+ fp->_w = 0;
__cleanup = _cleanup;
return (ret);