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[COMMITTED] NaCl: Fix unused variable errors in lowlevellock-futex.h macros.

Message ID 20160120230652.B583A2C3B00@topped-with-meat.com
State New
Headers show

Commit Message

Roland McGrath Jan. 20, 2016, 11:06 p.m. UTC 
This unbreaks the trunk build on arm-nacl.

Thanks,
Roland


2016-01-20  Roland McGrath  <roland@hack.frob.com>

	* sysdeps/nacl/lowlevellock-futex.h
	(lll_futex_wait, lll_futex_timed_wait, lll_futex_wake):
	Always evaluate	PRIVATE argument.
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Patch

diff --git a/sysdeps/nacl/lowlevellock-futex.h b/sysdeps/nacl/lowlevellock-futex.h
index 5f7d459..5382f68 100644
--- a/sysdeps/nacl/lowlevellock-futex.h
+++ b/sysdeps/nacl/lowlevellock-futex.h
@@ -35,7 +35,8 @@ 
 
 /* Wait while *FUTEXP == VAL for an lll_futex_wake call on FUTEXP.  */
 #define lll_futex_wait(futexp, val, private) \
-  (- __nacl_irt_futex.futex_wait_abs ((volatile int *) (futexp), val, NULL))
+  ((void) (private), \
+   - __nacl_irt_futex.futex_wait_abs ((volatile int *) (futexp), val, NULL))
 
 /* Wait until a lll_futex_wake call on FUTEXP, or TIMEOUT elapses.  */
 #define lll_futex_timed_wait(futexp, val, timeout, private)             \
@@ -60,13 +61,15 @@ 
     if (_err == 0)                                                      \
       _err = __nacl_irt_futex.futex_wait_abs				\
 	((volatile int *) (futexp), val, _to);                          \
-    -_err;                                                              \
+    (void) (private);							\
+    -_err;								\
   })
 
 /* Wake up up to NR waiters on FUTEXP.  */
 #define lll_futex_wake(futexp, nr, private)                     \
   ({                                                            \
     int _woken;                                                 \
+    (void) (private);						\
     - __nacl_irt_futex.futex_wake ((volatile int *) (futexp), nr, &_woken); \
   })