~/p/cpython ❯❯❯ ./python.exe -c '
                class i:
                 if i:d<2<[super for()in e]'
Assertion failed: (0), function all_exits_have_lineno, file flowgraph.c, line 528.

fuzz_pycompile: Python/flowgraph.c:528: _Bool all_exits_have_lineno(basicblock *): Assertion `0' failed.
--
  | AddressSanitizer:DEADLYSIGNAL
  | =================================================================
  | ==27322==ERROR: AddressSanitizer: ABRT on unknown address 0x053900006aba (pc 0x7b9e312b000b bp 0x7b9e31425588 sp 0x7ffddbefe650 T0)
  | SCARINESS: 10 (signal)
  | #0 0x7b9e312b000b in raise /build/glibc-SzIz7B/glibc-2.31/sysdeps/unix/sysv/linux/raise.c:51:1
  | #1 0x7b9e3128f858 in abort /build/glibc-SzIz7B/glibc-2.31/stdlib/abort.c:79:7
  | #2 0x7b9e3128f728 in __assert_fail_base /build/glibc-SzIz7B/glibc-2.31/assert/assert.c:92:3
  | #3 0x7b9e312a0fd5 in __assert_fail /build/glibc-SzIz7B/glibc-2.31/assert/assert.c:101:3
  | #4 0x86784f in all_exits_have_lineno cpython3/Python/flowgraph.c:528:21
  | #5 0x86784f in _PyCfg_OptimizeCodeUnit cpython3/Python/flowgraph.c:2474:5
  | #6 0x7e624f in optimize_and_assemble_code_unit cpython3/Python/compile.c:7583:9
  | #7 0x7e624f in optimize_and_assemble cpython3/Python/compile.c:7625:12
  | #8 0x814aeb in compiler_class_body cpython3/Python/compile.c:2545:24
  | #9 0x7f248e in compiler_class cpython3/Python/compile.c:2607:9
  | #10 0x7f248e in compiler_visit_stmt cpython3/Python/compile.c:3978:16
  | #11 0x7e8973 in compiler_body cpython3/Python/compile.c:1731:9
  | #12 0x7e276e in compiler_codegen cpython3/Python/compile.c:1747:13
  | #13 0x7dff40 in compiler_mod cpython3/Python/compile.c:1775:9
  | #14 0x7dff40 in _PyAST_Compile cpython3/Python/compile.c:555:24
  | #15 0x93b2e3 in Py_CompileStringObject cpython3/Python/pythonrun.c:1452:10
  | #16 0x93b3d4 in Py_CompileStringExFlags cpython3/Python/pythonrun.c:1465:10
  | #17 0x587501 in fuzz_pycompile cpython3/Modules/_xxtestfuzz/fuzzer.c:550:24
  | #18 0x587501 in _run_fuzz cpython3/Modules/_xxtestfuzz/fuzzer.c:563:14
  | #19 0x587501 in LLVMFuzzerTestOneInput cpython3/Modules/_xxtestfuzz/fuzzer.c:704:11
  | #20 0x458923 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
  | #21 0x444082 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:324:6
  | #22 0x44992c in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:860:9
  | #23 0x472e62 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
  | #24 0x7b9e31291082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/libc-start.c:308:16
  | #25 0x43a24d in _start