Unresolved references + tuples crashes mypy #10400
Description
Crash Report
Uhh.. mypy crashed? Not sure what to put here...
Traceback
(running dev version, and I put a few print statements to figure out what was erroring, so the line numbers may be off)
$ mypy repro.py
Traceback (most recent call last):
File "/home/a5/.virtualenvs/mypyplay/bin/mypy", line 33, in <module>
sys.exit(load_entry_point('mypy', 'console_scripts', 'mypy')())
File "/home/a5/mypy/mypy/__main__.py", line 11, in console_entry
main(None, sys.stdout, sys.stderr)
File "/home/a5/mypy/mypy/main.py", line 98, in main
res = build.build(sources, options, None, flush_errors, fscache, stdout, stderr)
File "/home/a5/mypy/mypy/build.py", line 179, in build
result = _build(
File "/home/a5/mypy/mypy/build.py", line 253, in _build
graph = dispatch(sources, manager, stdout)
File "/home/a5/mypy/mypy/build.py", line 2688, in dispatch
process_graph(graph, manager)
File "/home/a5/mypy/mypy/build.py", line 3012, in process_graph
process_stale_scc(graph, scc, manager)
File "/home/a5/mypy/mypy/build.py", line 3104, in process_stale_scc
mypy.semanal_main.semantic_analysis_for_scc(graph, scc, manager.errors)
File "/home/a5/mypy/mypy/semanal_main.py", line 82, in semantic_analysis_for_scc
apply_semantic_analyzer_patches(patches)
File "/home/a5/mypy/mypy/semanal.py", line 5092, in apply_semantic_analyzer_patches
patch_func()
File "/home/a5/mypy/mypy/semanal.py", line 1552, in <lambda>
self.schedule_patch(PRIORITY_FALLBACKS, lambda: calculate_tuple_fallback(base))
File "/home/a5/mypy/mypy/semanal_shared.py", line 234, in calculate_tuple_fallback
fallback.args = (join.join_type_list(list(typ.items)),) + fallback.args[1:]
File "/home/a5/mypy/mypy/join.py", line 533, in join_type_list
joined = join_types(joined, t)
File "/home/a5/mypy/mypy/join.py", line 106, in join_types
return t.accept(TypeJoinVisitor(s))
File "/home/a5/mypy/mypy/types.py", line 1963, in accept
assert isinstance(visitor, SyntheticTypeVisitor)
AssertionError
To Reproduce
from typing import Tuple
class Foo:
...
class Bar(aaaaaaaaaa):
...
class FooBarTuple(Tuple[Foo, Bar]):
...Your Environment
- Mypy version used: dev
- Mypy command-line flags: none
- Mypy configuration options from
mypy.ini(and other config files): none - Python version used: 3.8.2
- Operating system and version: debian 10
Relevant notes:
Changing FooBarTuple to:
class FooBarTuple(Tuple[Bar]):
...outputs the expected values (that aaaaaaaaaa is undefined).