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-rw-r--r--libio/fgetc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libio/fgetc.c b/libio/fgetc.c
index 07fd89a516..a754c4b78b 100644
--- a/libio/fgetc.c
+++ b/libio/fgetc.c
@@ -31,7 +31,7 @@ fgetc (fp)
 {
   int result;
   CHECK_FILE (fp, EOF);
-  __libc_cleanup_region_start (_IO_funlockfile, fp);
+  __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   result = _IO_getc_unlocked (fp);
   __libc_cleanup_region_end (1);