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macro: better make IN_SET() macro use const arrays

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This commit is contained in:
Lennart Poettering
2013-12-03 16:41:06 +01:00
parent 89fbb95e03
commit 059d9fbb5a
1 changed files with 11 additions and 10 deletions
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21
src/shared/macro.h
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@@ -285,16 +285,17 @@ do { \
#define SET_FLAG(v, flag, b) \ #define SET_FLAG(v, flag, b) \
(v) = (b) ? ((v) | (flag)) : ((v) & ~(flag)) (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
#define IN_SET(x, ...) ({ \ #define IN_SET(x, ...) \
typeof(x) _x = (x); \ ({ \
unsigned _i; \ const typeof(x) _x = (x); \
bool _found = false; \ unsigned _i; \
for (_i = 0; _i < sizeof((typeof(_x)[]) { __VA_ARGS__ })/sizeof(typeof(_x)); _i++) \ bool _found = false; \
if (((typeof(_x)[]) { __VA_ARGS__ })[_i] == _x) { \ for (_i = 0; _i < sizeof((const typeof(_x)[]) { __VA_ARGS__ })/sizeof(const typeof(_x)); _i++) \
_found = true; \ if (((const typeof(_x)[]) { __VA_ARGS__ })[_i] == _x) { \
break; \ _found = true; \
} \ break; \
_found; \ } \
_found; \
}) })