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http://bugs.gentoo.org/180619
--- usr/isns.c
+++ usr/isns.c
@@ -215,13 +215,13 @@
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define set_scn_flag(x) \
-{ \
+({ \
x = (x & 0x55555555) << 1 | (x & 0xaaaaaaaa) >> 1; \
x = (x & 0x33333333) << 2 | (x & 0xcccccccc) >> 2; \
x = (x & 0x0f0f0f0f) << 4 | (x & 0xf0f0f0f0) >> 4; \
x = (x & 0x00ff00ff) << 8 | (x & 0xff00ff00) >> 8; \
x = (x & 0x0000ffff) << 16 | (x & 0xffff0000) >> 16; \
-}
+})
#else
#define set_scn_flag(x) (x)
#endif
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