private void initPointerInfo() {
		ptrDT = PointerDataType.getPointer(null, -1);
	}
Method that initializes information about the
program's pointer size and creates an appropriate
pointer data type (i.e. ptrDT)
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/exceptionhandlers/gcc/GccAnalysisClass.java