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-rw-r--r--libio/strops.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libio/strops.c b/libio/strops.c
index 6a9a8846c4..1cd0bf6c3d 100644
--- a/libio/strops.c
+++ b/libio/strops.c
@@ -133,7 +133,10 @@ _IO_str_overflow (FILE *fp, int c)
     *fp->_IO_write_ptr++ = (unsigned char) c;
   if (fp->_IO_write_ptr > fp->_IO_read_end)
     fp->_IO_read_end = fp->_IO_write_ptr;
-  return c;
+  if (flush_only)
+    return 0;
+  else
+    return c;
 }
 libc_hidden_def (_IO_str_overflow)