June 23, 2006
Why does DMD have this special exception for the finally block?

The documentation states that "A FinallyStatement may not exit with a throw, goto, break, continue, or return; nor may it be entered with a goto.", but this is obviously not the case in the following code. The closeResources() method throws an exception which exits the finally statement. DMD simply is not allowing code which would handle the exception.

void closeResources() {
	throw new Exception("from throwsException");
}

void main() {
	// open resources
	try {
		// use resources
		
	} catch(Exception e) {
		// handle exception
		
	} finally {
		closeResources();
	}
}


If this exception is really a part of the language, shouldn't the gdc compiler give the same behavior? The following code compiles with gdc but not dmd.

void closeResources() {
	throw new Exception("from throwsException");
}

void main() {
	// open resources
	try {
		// use resources
		
	} catch(Exception e) {
		// handle exception
		
	} finally {
		try {
			closeResources();
		} catch (Exception e) {
		}
	}
}


Thanks,
  Bradley
June 25, 2006
Bradley Smith wrote:
> 
> If this exception is really a part of the language, shouldn't the gdc compiler give the same behavior? The following code compiles with gdc but not dmd.

a bit OT, but, gdc is not a standard/reference compiler .. dmd is.