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-rw-r--r--src/util/check.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/src/util/check.h b/src/util/check.h
index 5cc078b36b..3d534fd33e 100644
--- a/src/util/check.h
+++ b/src/util/check.h
@@ -25,7 +25,7 @@ class NonFatalCheckError : public std::runtime_error
* - where the condition is assumed to be true, not for error handling or validating user input
* - where a failure to fulfill the condition is recoverable and does not abort the program
*
- * For example in RPC code, where it is undersirable to crash the whole program, this can be generally used to replace
+ * For example in RPC code, where it is undesirable to crash the whole program, this can be generally used to replace
* asserts or recoverable logic errors. A NonFatalCheckError in RPC code is caught and passed as a string to the RPC
* caller, which can then report the issue to the developers.
*/
@@ -46,4 +46,14 @@ class NonFatalCheckError : public std::runtime_error
#error "Cannot compile without assertions!"
#endif
+/** Helper for Assert(). TODO remove in C++14 and replace `decltype(get_pure_r_value(val))` with `T` (templated lambda) */
+template <typename T>
+T get_pure_r_value(T&& val)
+{
+ return std::forward<T>(val);
+}
+
+/** Identity function. Abort if the value compares equal to zero */
+#define Assert(val) [&]() -> decltype(get_pure_r_value(val))& { auto& check = (val); assert(#val && check); return check; }()
+
#endif // BITCOIN_UTIL_CHECK_H