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-rw-r--r--include/unistd.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/unistd.h b/include/unistd.h
index e15fa0e23d..16a88153a0 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -171,8 +171,6 @@ extern int __libc_pause (void);
 /* Not cancelable variant.  */
 extern int __pause_nocancel (void) attribute_hidden;
 
-extern int __have_dup3 attribute_hidden;
-
 extern int __getlogin_r_loginuid (char *name, size_t namesize)
      attribute_hidden;