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Make RETURN_VALUE macro side effect safe.

This commit is contained in:
Martin Ling 2013-12-07 16:26:48 +00:00
parent 33fd8804b8
commit 7c1eff54fd
1 changed files with 5 additions and 1 deletions
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6
serialport.c
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@ -173,7 +173,11 @@ void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
#define RETURN_OK() RETURN_CODE(SP_OK);
#define RETURN_ERROR(err, msg) do { DEBUG_ERROR(err, msg); return err; } while (0)
#define RETURN_FAIL(msg) do { DEBUG_FAIL(msg); return SP_ERR_FAIL; } while (0)
#define RETURN_VALUE(fmt, x) do { DEBUG("%s returning " fmt, __func__, x); return x; } while (0)
#define RETURN_VALUE(fmt, x) do { \
typeof(x) _x = x; \
DEBUG("%s returning " fmt, __func__, _x); \
return _x; \
} while (0)
#define SET_ERROR(val, err, msg) do { DEBUG_ERROR(err, msg); val = err; } while (0)
#define SET_FAIL(val, msg) do { DEBUG_FAIL(msg); val = SP_ERR_FAIL; } while (0)
#define TRACE(fmt, ...) DEBUG("%s(" fmt ") called", __func__, ##__VA_ARGS__)