Encountered in #421. ``` /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/bits/stl_pair.h:295:17: error: an exception may be thrown in function 'pair' which should not throw exceptions [bugprone-exception-escape,-warnings-as-errors] 295 | constexpr pair(pair&&) = default; ///< Move constructor | ^ /home/runner/work/simplecpp/simplecpp/simplecpp.cpp:1747:29: note: frame #0: unhandled exception of type 'simplecpp::Macro::Error' may be thrown in function 'parseDefine' here 1747 | throw Error(tok->location, "In definition of '" + nameTokDef->str() + "': Missing opening parenthesis for __VA_OPT__"); | ^ /home/runner/work/simplecpp/simplecpp/simplecpp.cpp:1508:21: note: frame #1: function 'operator=' calls function 'parseDefine' here 1508 | parseDefine(other.nameTokDef); | ^ /home/runner/work/simplecpp/simplecpp/simplecpp.cpp:1495:19: note: frame #2: function 'Macro' calls function 'operator=' here 1495 | *this = other; | ^ /usr/bin/../lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/bits/stl_pair.h:295:17: note: frame #3: function 'pair' calls function 'Macro' here 295 | constexpr pair(pair&&) = default; ///< Move constructor | ^ ``