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authorPaul Pluzhnikov <ppluzhnikov@google.com>2018-12-31 19:14:28 -0800
committerPaul Pluzhnikov <ppluzhnikov@google.com>2019-01-31 14:07:45 -0800
commit5f10701fdc7a4708101f7931c15b7146c4f06690 (patch)
tree826e0575534318f16626af321a3c88cdd2761dfd /libio/fileops.c
parent583dd860d5b833037175247230a328f0050dbfe9 (diff)
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libio: use stdout in puts and putchar, etc [BZ #24051].
GLIBC explicitly allows one to assign a new FILE pointer to stdout and
other standard streams.  printf and wprintf were honouring assignment to
stdout and using the new value, but puts, putchar, and wide char variants
did not.

The stdout part is fixed here.  The stdin part will be fixed in a followup.
Diffstat (limited to 'libio/fileops.c')
-rw-r--r--libio/fileops.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/libio/fileops.c b/libio/fileops.c
index 43e33820e3..d2070a856e 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -501,13 +501,13 @@ _IO_new_file_underflow (FILE *fp)
 	 traditional Unix systems did this for stdout.  stderr better
 	 not be line buffered.  So we do just that here
 	 explicitly.  --drepper */
-      _IO_acquire_lock (_IO_stdout);
+      _IO_acquire_lock (stdout);
 
-      if ((_IO_stdout->_flags & (_IO_LINKED | _IO_NO_WRITES | _IO_LINE_BUF))
+      if ((stdout->_flags & (_IO_LINKED | _IO_NO_WRITES | _IO_LINE_BUF))
 	  == (_IO_LINKED | _IO_LINE_BUF))
-	_IO_OVERFLOW (_IO_stdout, EOF);
+	_IO_OVERFLOW (stdout, EOF);
 
-      _IO_release_lock (_IO_stdout);
+      _IO_release_lock (stdout);
     }
 
   _IO_switch_to_get_mode (fp);