Fix: optional.h macro missing parentheses and guards
[lttng-tools.git] / src / common / optional.h
index aee5fcc5ec911d9d17e97218632767348f827cb8..53215b0315e299695e03ec67dc49890176707cd4 100644 (file)
@@ -73,8 +73,8 @@
  */
 #define LTTNG_OPTIONAL_GET(optional)                   \
         ({                                             \
-               assert(optional.is_set);                \
-               optional.value;                         \
+               assert((optional).is_set);              \
+               (optional).value;                       \
        })
 
 /*
 #define LTTNG_OPTIONAL_INIT { .is_set = 0 }
 
 /* Set the value of an optional field. */
-#define LTTNG_OPTIONAL_SET(field_ptr, val) \
-       (field_ptr)->value = val;          \
-       (field_ptr)->is_set = 1;
+#define LTTNG_OPTIONAL_SET(field_ptr, val)     \
+       do {                                    \
+               (field_ptr)->value = (val);     \
+               (field_ptr)->is_set = 1;        \
+       } while (0)
 
 /* Put an optional field in the "unset" (NULL-ed) state. */
-#define LTTNG_OPTIONAL_UNSET(field_ptr)    \
-       (field_ptr)->is_set = 0;
+#define LTTNG_OPTIONAL_UNSET(field_ptr)                \
+       do {                                    \
+               (field_ptr)->is_set = 0;        \
+       } while (0)
 
 #endif /* LTTNG_OPTIONAL_H */
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