Improved Compilation Error Message: Say proper things when a method variable is declared while a parameter is already used

[dschissler]

    protected function doStuff(var theThings, bool correctly = false)
    {
        var correctly;

        var_export(correctly);
    }

    public final function __construct(<DiInterface> di)
    {
        this->doStuff("abc", true);
    }

dschissler@box1:/opt/project$ zephir build
Warning: Variable "correctly" declared but not used in Project\Application::doStuff in /opt/project/project/Application.zep on 24 [unused-variable]

	        var correctly;
	---------------------^


Compiling...
Installing...
Internal extension compilation failed. Check compile-errors.log for more information

compile-errors.log

/opt/extension/ext/project/application.zep.c: In function ‘zim_Project_Application_doStuff’:
/opt/extension/ext/project/application.zep.c:57:13: error: incompatible types when assigning to type ‘zval {aka struct _zval_struct}’ from type ‘int’
   correctly = 0;
             ^
/opt/extension/ext/project/application.zep.c:59:13: error: incompatible types when assigning to type ‘zval {aka struct _zval_struct}’ from type ‘int’
   correctly = zephir_get_boolval(correctly_param);
             ^
make: *** [project/application.lo] Error 1
/opt/extension/ext/project/application.zep.c: In function ‘zim_Project_Application_doStuff’:
/opt/extension/ext/project/application.zep.c:57:13: error: incompatible types when assigning to type ‘zval {aka struct _zval_struct}’ from type ‘int’
   correctly = 0;
             ^
/opt/extension/ext/project/application.zep.c:59:13: error: incompatible types when assigning to type ‘zval {aka struct _zval_struct}’ from type ‘int’
   correctly = zephir_get_boolval(correctly_param);
             ^
make: *** [project/application.lo] Error 1

So that obviously isn't very helpful. I can work around it through since I learned that this gibberish can be mapped to a useful phrase or sentence made up of my private understanding of the situation.

[dschissler]

This just struck me again during a refactor. Its difficult because not many languages require you to declare variable beforehand but then don't offer assistance around that.