`MS_CONSTR_STR_REGEX` slot clear was missing. It was not properly traversed and freed. Now it is. It used to fail with memory sanitized with: ``` ==2637==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x50e000e8e350 in thread T0 #0 0x7f07a10fc4d8 in free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52 msgspec#1 0x7f079c42ddf4 in TypeNode_Free src/msgspec/_core.c:3474 msgspec#2 0x7f079c42dbdf in TypeNode_Free src/msgspec/_core.c:3468 msgspec#3 0x7f079c55e2eb in JSONDecoder_dealloc src/msgspec/_core.c:17235 msgspec#4 0x7f07a0999132 in _PyEval_EvalFrameDefault Python/bytecodes.c:1398 msgspec#5 0x7f07a0a15f73 in _PyObject_VectorcallTstate Include/internal/pycore_call.h:92 msgspec#6 0x7f07a0a15f73 in method_vectorcall Objects/classobject.c:69 msgspec#7 0x7f07a098d82f in _PyEval_EvalFrameDefault Python/bytecodes.c:3263 msgspec#8 0x7f07a0a14e6c in _PyFunction_Vectorcall Objects/call.c:419 msgspec#9 0x7f07a0a14e6c in _PyObject_FastCallDictTstate Objects/call.c:144 msgspec#10 0x7f07a0a14e6c in _PyObject_Call_Prepend Objects/call.c:508 msgspec#11 0x7f07a0ac3381 in slot_tp_call Objects/typeobject.c:8791 msgspec#12 0x7f07a0a14206 in _PyObject_MakeTpCall Objects/call.c:240 msgspec#13 0x7f07a098d20a in _PyEval_EvalFrameDefault Python/bytecodes.c:2715 msgspec#14 0x7f07a0a14e6c in _PyFunction_Vectorcall Objects/call.c:419 msgspec#15 0x7f07a0a14e6c in _PyObject_FastCallDictTstate Objects/call.c:144 msgspec#16 0x7f07a0a14e6c in _PyObject_Call_Prepend Objects/call.c:508 msgspec#17 0x7f07a0ac3381 in slot_tp_call Objects/typeobject.c:8791 msgspec#18 0x7f07a0a1550e in PyObject_Call (/opt/hostedtoolcache/Python/3.12.15/x64/lib/libpython3.12.so.1.0+0x21550e) (BuildId: d5ce433e66c26342bfaf6b82ab1a95541a8ebade) msgspec#19 0x7f07a098d82f in _PyEval_EvalFrameDefault Python/bytecodes.c:3263 msgspec#20 0x7f07a0a14e6c in _PyFunction_Vectorcall Objects/call.c:419 msgspec#21 0x7f07a0a14e6c in _PyObject_FastCallDictTstate Objects/call.c:144 msgspec#22 0x7f07a0a14e6c in _PyObject_Call_Prepend Objects/call.c:508 msgspec#23 0x7f07a0ac3381 in slot_tp_call Objects/typeobject.c:8791 msgspec#24 0x7f07a0a14206 in _PyObject_MakeTpCall Objects/call.c:240 msgspec#25 0x7f07a098d20a in _PyEval_EvalFrameDefault Python/bytecodes.c:2715 msgspec#26 0x7f07a0a14e6c in _PyFunction_Vectorcall Objects/call.c:419 msgspec#27 0x7f07a0a14e6c in _PyObject_FastCallDictTstate Objects/call.c:144 msgspec#28 0x7f07a0a14e6c in _PyObject_Call_Prepend Objects/call.c:508 msgspec#29 0x7f07a0ac3381 in slot_tp_call Objects/typeobject.c:8791 msgspec#30 0x7f07a0a14206 in _PyObject_MakeTpCall Objects/call.c:240 msgspec#31 0x7f07a098d20a in _PyEval_EvalFrameDefault Python/bytecodes.c:2715 msgspec#32 0x7f07a0a14e6c in _PyFunction_Vectorcall Objects/call.c:419 msgspec#33 0x7f07a0a14e6c in _PyObject_FastCallDictTstate Objects/call.c:144 msgspec#34 0x7f07a0a14e6c in _PyObject_Call_Prepend Objects/call.c:508 msgspec#35 0x7f07a0ac3381 in slot_tp_call Objects/typeobject.c:8791 msgspec#36 0x7f07a0a14206 in _PyObject_MakeTpCall Objects/call.c:240 msgspec#37 0x7f07a098d20a in _PyEval_EvalFrameDefault Python/bytecodes.c:2715 msgspec#38 0x7f07a0ae8f35 in PyEval_EvalCode Python/ceval.c:580 msgspec#39 0x7f07a0ae7a3c in builtin_exec_impl Python/bltinmodule.c:1093 msgspec#40 0x7f07a0ae7a3c in builtin_exec Python/clinic/bltinmodule.c.h:543 msgspec#41 0x7f07a0a345a2 in cfunction_vectorcall_FASTCALL_KEYWORDS Objects/methodobject.c:438 msgspec#42 0x7f07a0a14532 in _PyObject_VectorcallTstate Include/internal/pycore_call.h:92 msgspec#43 0x7f07a0a14532 in PyObject_Vectorcall Objects/call.c:325 msgspec#44 0x7f07a098d20a in _PyEval_EvalFrameDefault Python/bytecodes.c:2715 msgspec#45 0x7f07a0ae8f35 in PyEval_EvalCode Python/ceval.c:580 msgspec#46 0x7f07a0b09f76 in run_eval_code_obj Python/pythonrun.c:1757 msgspec#47 0x7f07a0b09aaa in run_mod Python/pythonrun.c:1778 msgspec#48 0x7f07a0b099f1 in pyrun_file Python/pythonrun.c:1674 msgspec#49 0x7f07a0b09852 in _PyRun_SimpleFileObject Python/pythonrun.c:459 msgspec#50 0x7f07a0b09667 in _PyRun_AnyFileObject Python/pythonrun.c:78 msgspec#51 0x7f07a0b12943 in pymain_run_file_obj Modules/main.c:361 msgspec#52 0x7f07a0b12943 in pymain_run_file Modules/main.c:380 msgspec#53 0x7f07a0b12943 in pymain_run_python Modules/main.c:634 msgspec#54 0x7f07a0b12943 in Py_RunMain Modules/main.c:714 msgspec#55 0x7f07a0b1243a in Py_BytesMain Modules/main.c:768 msgspec#56 0x7f07a042a1c9 (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: a4a7992a8e66555c8141ab2a08a8465ff6e0ea65) msgspec#57 0x7f07a042a28a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: a4a7992a8e66555c8141ab2a08a8465ff6e0ea65) msgspec#58 0x558976af7094 in _start (/opt/hostedtoolcache/Python/3.12.15/x64/bin/python3.12+0x1094) (BuildId: d664fd041bd9df9902c326eb80717fa04325aaaa) 0x50e000e8e350 is located 16 bytes inside of 152-byte region [0x50e000e8e340,0x50e000e8e3d8) allocated by thread T0 here: #0 0x7f07a10fd9c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69 msgspec#1 0x7f07a0a7c2fc in gc_alloc Modules/gcmodule.c:2330 msgspec#2 0x7f07a0a7c2fc in _PyObject_GC_NewVar Modules/gcmodule.c:2364 SUMMARY: AddressSanitizer: bad-free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52 in free ==2637==ABORTING ``` See https://github.com/msgspec/msgspec/actions/runs/38243375356/job/114791328508 Now it is properly cleaned.

Add top-level encode/decode functions #3

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Add top-level `encode`/`decode` functions #3