René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Crash on AST with misordered linenos","articleBody":"- Compile 3.11 branch\r\n- `./python.exe -m ensurepip`\r\n- `./python.exe -m pip install pytest-cov`\r\n- `./python.exe -m pytest`\r\n\r\nCrashes with `Assertion failed: (i-\u003ei_end_lineno \u003e= i-\u003ei_lineno), function write_location_info_long_form, file compile.c, line 7532.`\r\n\r\nlldb stack trace:\r\n\r\n```\r\n(lldb) bt\r\n* thread #1, queue = 'com.apple.main-thread', stop reason = hit program assert\r\n    frame #0: 0x00007fff203cd92e libsystem_kernel.dylib`__pthread_kill + 10\r\n    frame #1: 0x00007fff203fc5bd libsystem_pthread.dylib`pthread_kill + 263\r\n    frame #2: 0x00007fff20351406 libsystem_c.dylib`abort + 125\r\n    frame #3: 0x00007fff203507d8 libsystem_c.dylib`__assert_rtn + 314\r\n  * frame #4: 0x000000010027c183 python.exe`write_location_info_long_form.cold.2 at compile.c:7532:5 [opt]\r\n    frame #5: 0x000000010018f469 python.exe`write_location_info_long_form(a=\u003cunavailable\u003e, i=\u003cunavailable\u003e, length=\u003cunavailable\u003e) at compile.c:7532:5 [opt]\r\n    frame #6: 0x000000010018f27d python.exe`write_location_info_entry(a=0x00007ffeefbfe5d0, i=0x000000010388ac98, isize=1) at compile.c:7590:5 [opt]\r\n    frame #7: 0x000000010018d2cd python.exe`assemble_emit_location(a=0x00007ffeefbfe5d0, i=0x000000010388ac98) at compile.c:7605:12 [opt]\r\n    frame #8: 0x000000010017e9fa python.exe`assemble(c=\u003cunavailable\u003e, addNone=\u003cunavailable\u003e) at compile.c:8411:18 [opt]\r\n    frame #9: 0x000000010017d4a3 python.exe`compiler_mod(c=0x00007ffeefbfe6b8, mod=\u003cunavailable\u003e) at compile.c:2203:10 [opt]\r\n    frame #10: 0x000000010017d2b3 python.exe`_PyAST_Compile(mod=0x00000001038852b0, filename=0x000000010654d630, flags=\u003cunavailable\u003e, optimize=\u003cunavailable\u003e, arena=0x00000001064b0100) at compile.c:581:10 [opt]\r\n    frame #11: 0x00000001001634e0 python.exe`builtin_compile_impl(module=\u003cunavailable\u003e, source=0x00000001065a3fc0, filename=0x000000010654d630, mode=\u003cunavailable\u003e, flags=\u003cunavailable\u003e, dont_inherit=1, optimize=-1, feature_version=-1) at bltinmodule.c:818:33 [opt]\r\n    frame #12: 0x0000000100161fb6 python.exe`builtin_compile(module=\u003cunavailable\u003e, args=0x00007ffeefbfe7f0, nargs=\u003cunavailable\u003e, kwnames=\u003cunavailable\u003e) at bltinmodule.c.h:328:20 [opt]\r\n    frame #13: 0x00000001000cbb08 python.exe`cfunction_vectorcall_FASTCALL_KEYWORDS(func=0x0000000100b9f4d0, args=0x0000000100c6fe00, nargsf=\u003cunavailable\u003e, kwnames=0x0000000102c72260) at methodobject.c:443:24 [opt]\r\n    frame #14: 0x0000000100087018 python.exe`_PyObject_VectorcallTstate(tstate=0x0000000100486930, callable=0x0000000100b9f4d0, args=0x0000000100c6fe00, nargsf=9223372036854775811, kwnames=0x0000000102c72260) at pycore_call.h:92:11 [opt]\r\n    frame #15: 0x0000000100086fa0 python.exe`PyObject_Vectorcall(callable=\u003cunavailable\u003e, args=\u003cunavailable\u003e, nargsf=\u003cunavailable\u003e, kwnames=\u003cunavailable\u003e) at call.c:299:12 [opt]\r\n    frame #16: 0x0000000100170d7c python.exe`_PyEval_EvalFrameDefault(tstate=0x0000000100486930, frame=0x0000000100c6fd70, throwflag=\u003cunavailable\u003e) at ceval.c:4826:23 [opt]\r\n    frame #17: 0x000000010016680d python.exe`_PyEval_EvalFrame(tstate=\u003cunavailable\u003e, frame=\u003cunavailable\u003e, throwflag=\u003cunavailable\u003e) at pycore_ceval.h:66:16 [opt]\r\n    frame #18: 0x0000000100166726 python.exe`_PyEval_Vector(tstate=0x0000000100486930, func=0x0000000104737d80, locals=0x0000000000000000, args=0x00007ffeefbfeb80, argcount=3, kwnames=\u003cunavailable\u003e) at ceval.c:6468:24 [opt]\r\n    frame #19: 0x0000000100087330 python.exe`_PyFunction_Vectorcall(func=0x0000000104737d80, stack=0x00007ffeefbfeb80, nargsf=\u003cunavailable\u003e, kwnames=0x0000000000000000) at call.c:0:45 [opt]\r\n    frame #20: 0x0000000100089fd8 python.exe`_PyObject_VectorcallTstate(tstate=0x0000000100486930, callable=0x0000000104737d80, args=0x00007ffeefbfeb80, nargsf=3, kwnames=0x0000000000000000) at pycore_call.h:92:11 [opt]\r\n    frame #21: 0x0000000100089644 python.exe`method_vectorcall(method=\u003cunavailable\u003e, args=0x00000001064c9788, nargsf=\u003cunavailable\u003e, kwnames=0x0000000000000000) at classobject.c:89:18 [opt]\r\n    frame #22: 0x0000000100086f3d python.exe`_PyVectorcall_Call(tstate=0x0000000100486930, func=(python.exe`method_vectorcall at classobject.c:44), callable=0x000000010640d310, tuple=0x00000001064c9770, kwargs=0x0000000000000000) at call.c:245:16 [opt]\r\n    frame #23: 0x0000000100087148 python.exe`_PyObject_Call(tstate=0x0000000100486930, callable=0x000000010640d310, args=0x00000001064c9770, kwargs=0x0000000000000000) at call.c:328:16 [opt]\r\n    frame #24: 0x0000000100087209 python.exe`PyObject_Call(callable=\u003cunavailable\u003e, args=\u003cunavailable\u003e, kwargs=\u003cunavailable\u003e) at call.c:355:12 [opt]\r\n    frame #25: 0x0000000100177419 python.exe`do_call_core(tstate=0x0000000100486930, func=0x000000010640d310, callargs=0x00000001064c9770, kwdict=0x0000000000000000, use_tracing=\u003cunavailable\u003e) at ceval.c:0:13 [opt]\r\n    frame #26: 0x00000001001733b0 python.exe`_PyEval_EvalFrameDefault(tstate=0x0000000100486930, frame=0x0000000100c6f580, throwflag=\u003cunavailable\u003e) at ceval.c:5431:22 [opt]\r\n    frame #27: 0x000000010016680d python.exe`_PyEval_EvalFrame(tstate=\u003cunavailable\u003e, frame=\u003cunavailable\u003e, throwflag=\u003cunavailable\u003e) at pycore_ceval.h:66:16 [opt]\r\n    frame #28: 0x0000000100166726 python.exe`_PyEval_Vector(tstate=0x0000000100486930, func=0x0000000104053490, locals=0x0000000000000000, args=0x00000001064c0a48, argcount=1, kwnames=\u003cunavailable\u003e) at ceval.c:6468:24 [opt]\r\n    frame #29: 0x0000000100087330 python.exe`_PyFunction_Vectorcall(func=0x0000000104053490, stack=0x00000001064c0a48, nargsf=\u003cunavailable\u003e, kwnames=0x00000001064c8f50) at call.c:0:45 [opt]\r\n    frame #30: 0x00000001000866b2 python.exe`_PyObject_FastCallDictTstate(tstate=0x0000000100486930, callable=0x0000000104053490, args=0x00007ffeefbfef70, nargsf=1, kwargs=0x00000001064c6d50) at call.c:152:15 [opt]\r\n    frame #31: 0x00000001000875e4 python.exe`_PyObject_Call_Prepend(tstate=\u003cunavailable\u003e, callable=\u003cunavailable\u003e, obj=0x000000010622f3a0, args=\u003cunavailable\u003e, kwargs=\u003cunavailable\u003e) at call.c:482:24 [opt]\r\n    frame #32: 0x00000001000ee1f9 python.exe`slot_tp_call(self=0x000000010622f3a0, args=0x000000010046c5a0, kwds=0x00000001064c6d50) at typeobject.c:7604:15 [opt]\r\n    frame #33: 0x000000010008689c python.exe`_PyObject_MakeTpCall(tstate=0x0000000100486930, callable=0x000000010622f3a0, args=0x0000000100c6f408, nargs=\u003cunavailable\u003e, keywords=0x0000000104694960) at call.c:214:18 [opt]\r\n    frame #34: 0x0000000100087049 python.exe`_PyObject_VectorcallTstate(tstate=0x0000000100486930, callable=0x000000010622f3a0, args=0x0000000100c6f408, nargsf=9223372036854775808, kwnames=0x0000000104694960) at pycore_call.h:90:16 [opt]\r\n    frame #35: 0x0000000100086fa0 python.exe`PyObject_Vectorcall(callable=\u003cunavailable\u003e, args=\u003cunavailable\u003e, nargsf=\u003cunavailable\u003e, kwnames=\u003cunavailable\u003e) at call.c:299:12 [opt]\r\n    frame #36: 0x0000000100170d7c python.exe`_PyEval_EvalFrameDefault(tstate=0x0000000100486930, frame=0x0000000100c6f380, throwflag=\u003cunavailable\u003e) at ceval.c:4826:23 [opt]\r\n    frame #37: 0x000000010016680d python.exe`_PyEval_EvalFrame(tstate=\u003cunavailable\u003e, frame=\u003cunavailable\u003e, throwflag=\u003cunavailable\u003e) at pycore_ceval.h:66:16 [opt]\r\n    frame #38: 0x0000000100166726 python.exe`_PyEval_Vector(tstate=0x0000000100486930, func=0x0000000102881b20, locals=0x0000000102830350, args=0x0000000000000000, argcount=0, kwnames=\u003cunavailable\u003e) at ceval.c:6468:24 [opt]\r\n    frame #39: 0x0000000100166615 python.exe`PyEval_EvalCode(co=\u003cunavailable\u003e, globals=0x0000000102830350, locals=0x0000000102830350) at ceval.c:1207:21 [opt]\r\n    frame #40: 0x0000000100163b09 python.exe`builtin_exec_impl(module=\u003cunavailable\u003e, source=0x000000010617f230, globals=0x0000000102830350, locals=0x0000000102830350, closure=\u003cunavailable\u003e) at bltinmodule.c:1080:17 [opt]\r\n    frame #41: 0x000000010016224d python.exe`builtin_exec(module=\u003cunavailable\u003e, args=0x0000000100c6f180, nargs=2, kwnames=0x0000000000000000) at bltinmodule.c.h:465:20 [opt]\r\n    frame #42: 0x00000001000cbb08 python.exe`cfunction_vectorcall_FASTCALL_KEYWORDS(func=0x0000000100b9f6b0, args=0x0000000100c6f180, nargsf=\u003cunavailable\u003e, kwnames=0x0000000000000000) at methodobject.c:443:24 [opt]\r\n    frame #43: 0x0000000100087018 python.exe`_PyObject_VectorcallTstate(tstate=0x0000000100486930, callable=0x0000000100b9f6b0, args=0x0000000100c6f180, nargsf=9223372036854775810, kwnames=0x0000000000000000) at pycore_call.h:92:11 [opt]\r\n    frame #44: 0x0000000100086fa0 python.exe`PyObject_Vectorcall(callable=\u003cunavailable\u003e, args=\u003cunavailable\u003e, nargsf=\u003cunavailable\u003e, kwnames=\u003cunavailable\u003e) at call.c:299:12 [opt]\r\n    frame #45: 0x0000000100170d7c python.exe`_PyEval_EvalFrameDefault(tstate=0x0000000100486930, frame=0x0000000100c6f0d8, throwflag=\u003cunavailable\u003e) at ceval.c:4826:23 [opt]\r\n    frame #46: 0x000000010016680d python.exe`_PyEval_EvalFrame(tstate=\u003cunavailable\u003e, frame=\u003cunavailable\u003e, throwflag=\u003cunavailable\u003e) at pycore_ceval.h:66:16 [opt]\r\n    frame #47: 0x0000000100166726 python.exe`_PyEval_Vector(tstate=0x0000000100486930, func=0x0000000102c5eaf0, locals=0x0000000000000000, args=0x0000000102894ba8, argcount=2, kwnames=\u003cunavailable\u003e) at ceval.c:6468:24 [opt]\r\n    frame #48: 0x0000000100087330 python.exe`_PyFunction_Vectorcall(func=0x0000000102c5eaf0, stack=0x0000000102894ba8, nargsf=\u003cunavailable\u003e, kwnames=0x0000000000000000) at call.c:0:45 [opt]\r\n    frame #49: 0x0000000100086f3d python.exe`_PyVectorcall_Call(tstate=0x0000000100486930, func=(python.exe`_PyFunction_Vectorcall at call.c:385), callable=0x0000000102c5eaf0, tuple=0x0000000102894b90, kwargs=0x0000000000000000) at call.c:245:16 [opt]\r\n    frame #50: 0x0000000100087148 python.exe`_PyObject_Call(tstate=0x0000000100486930, callable=0x0000000102c5eaf0, args=0x0000000102894b90, kwargs=0x0000000000000000) at call.c:328:16 [opt]\r\n    frame #51: 0x0000000100087209 python.exe`PyObject_Call(callable=\u003cunavailable\u003e, args=\u003cunavailable\u003e, kwargs=\u003cunavailable\u003e) at call.c:355:12 [opt]\r\n    frame #52: 0x00000001001d9f3d python.exe`pymain_run_module(modname=\u003cunavailable\u003e, set_argv0=\u003cunavailable\u003e) at main.c:300:14 [opt]\r\n    frame #53: 0x00000001001d982d python.exe`pymain_run_python(exitcode=0x00007ffeefbff7dc) at main.c:595:21 [opt]\r\n    frame #54: 0x00000001001d9718 python.exe`Py_RunMain at main.c:680:5 [opt]\r\n    frame #55: 0x00000001001d99af python.exe`pymain_main(args=\u003cunavailable\u003e) at main.c:710:12 [opt]\r\n    frame #56: 0x00000001001d99fb python.exe`Py_BytesMain(argc=\u003cunavailable\u003e, argv=\u003cunavailable\u003e) at main.c:734:12 [opt]\r\n    frame #57: 0x0000000100001999 python.exe`main(argc=\u003cunavailable\u003e, argv=\u003cunavailable\u003e) at python.c:15:12 [opt]\r\n    frame #58: 0x00007fff20417f3d libdyld.dylib`start + 1\r\n```\r\n\r\n**Your environment**\r\n\r\n- CPython versions tested on: 3.11 current head\r\n- Operating system and architecture: macOS\r\n\r\nI put print statements in that show the file it crashes on is `'/usr/local/lib/python3.11/site-packages/pytest_cov/plugin.py'`, but just running Python on that file doesn't reproduce the crash. I'll try to debug some more.","author":{"url":"https://github.com/JelleZijlstra","@type":"Person","name":"JelleZijlstra"},"datePublished":"2022-05-10T04:12:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/92597/cpython/issues/92597"}