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-rw-r--r--libio/ioungetc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libio/ioungetc.c b/libio/ioungetc.c
index cc414083f8..180e789c27 100644
--- a/libio/ioungetc.c
+++ b/libio/ioungetc.c
@@ -33,7 +33,7 @@ _IO_ungetc (c, fp)
   CHECK_FILE (fp, EOF);
   if (c == EOF)
     return EOF;
-  __libc_cleanup_region_start (&_IO_funlockfile, fp);
+  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   result = _IO_sputbackc (fp, (unsigned char) c);
   __libc_cleanup_region_end (1);