[Bug]: FOR loop with declared constants causes a crash

[boriel]

Contact Details

@boriel

Compiler version

v1.17.3

What happened?

The following program crashes the compiler:

const SCR_FIRST_LINE_ANSWER   as ubyte = 14
const SCR_MAX_LINES           as ubyte = 23

for i = SCR_FIRST_LINE_ANSWER to SCR_MAX_LINES
next

Error and Warning messages

Traceback (most recent call last):
  File "/home/boriel/src/boriel-basic/zxbasic/zxbc.py", line 12, in <module>
    sys.exit(zxbc.main())  # Exit
             ^^^^^^^^^^^
  File "/home/boriel/src/boriel-basic/zxbasic/src/zxbc/zxbc.py", line 110, in main
    optimizer.visit(zxbparser.ast)
  File "/home/boriel/src/boriel-basic/zxbasic/src/api/optimize.py", line 198, in visit
    return super().visit(node)
           ^^^^^^^^^^^^^^^^^^^
  File "/home/boriel/src/boriel-basic/zxbasic/src/api/optimize.py", line 55, in visit
    return super().visit(ToVisit(node))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/boriel/src/boriel-basic/zxbasic/src/ast/ast.py", line 41, in visit
    stack.append(last.send(last_result))
                 ^^^^^^^^^^^^^^^^^^^^^^
  File "/home/boriel/src/boriel-basic/zxbasic/src/api/optimize.py", line 422, in visit_FOR
    if from_ > to_ and step_ > 0:
       ^^^^^^^^^^^
TypeError: '>' not supported between instances of 'SymbolID' and 'SymbolID'

Code of Conduct

• I agree to follow this project's Code of Conduct