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D45875.diff
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diff --git a/sys/sys/sx.h b/sys/sys/sx.h
--- a/sys/sys/sx.h
+++ b/sys/sys/sx.h
@@ -301,12 +301,12 @@
#ifdef _STANDALONE
/* since we have no threads in the boot loader, trivially implement no-op version */
-#define sx_xlock(s) (1)
-#define sx_try_xlock(s) (1)
-#define sx_xunlock(s) (1)
-#define SX_DUPOK 0
-#define SX_NEW 0
-#define SX_NOWITNESS 0
+#define sx_xlock(s) do {} while (0)
+#define sx_try_xlock(s) (1)
+#define sx_xunlock(s) do {} while (0)
+#define SX_DUPOK 0
+#define SX_NEW 0
+#define SX_NOWITNESS 0
static __inline void
sx_init_flags(struct sx *sx, const char *description, int opts)
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D45875.diff (610 B)
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D45875: sx: avoid gcc -Wunused-value
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