Make numerous improvements

- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands

third_party/python/Python/pystate.c

@@ -17,6 +17,10 @@
 #include "third_party/python/Include/pystate.h"
 /* clang-format off */
 
+#if defined(__FSANITIZE_ADDRESS__) || defined(__FSANITIZE_UNDEFINED__)
+STATIC_YOINK("__die"); /* to guarantee backtraces */
+#endif
+
 /* Thread and interpreter state structures and their interfaces */
 
 #define ZERO(x) x = (typeof(x))pushpop(0L)
@@ -209,13 +213,10 @@ static PyThreadState *
 new_threadstate(PyInterpreterState *interp, int init)
 {
     PyThreadState *tstate = (PyThreadState *)PyMem_RawMalloc(sizeof(PyThreadState));
-
     if (_PyThreadState_GetFrame == 0)
         _PyThreadState_GetFrame = threadstate_getframe;
-
     if (tstate != 0) {
         tstate->interp = interp;
-
         ZERO(tstate->frame);
         ZERO(tstate->recursion_depth);
         ZERO(tstate->overflowed);
@@ -229,46 +230,35 @@ new_threadstate(PyInterpreterState *interp, int init)
 #else
         ZERO(tstate->thread_id);
 #endif
-
         ZERO(tstate->dict);
-
         ZERO(tstate->curexc_type);
         ZERO(tstate->curexc_value);
         ZERO(tstate->curexc_traceback);
-
         ZERO(tstate->exc_type);
         ZERO(tstate->exc_value);
         ZERO(tstate->exc_traceback);
-
         ZERO(tstate->c_profilefunc);
         ZERO(tstate->c_tracefunc);
         ZERO(tstate->c_profileobj);
         ZERO(tstate->c_traceobj);
-
         ZERO(tstate->trash_delete_nesting);
         ZERO(tstate->trash_delete_later);
         ZERO(tstate->on_delete);
         ZERO(tstate->on_delete_data);
-
         ZERO(tstate->coroutine_wrapper);
         ZERO(tstate->in_coroutine_wrapper);
-
         ZERO(tstate->async_gen_firstiter);
         ZERO(tstate->async_gen_finalizer);
-
         if (init)
             _PyThreadState_Init(tstate);
-
         HEAD_LOCK();
         ZERO(tstate->prev);
-
         tstate->next = interp->tstate_head;
         if (tstate->next)
             tstate->next->prev = tstate;
         interp->tstate_head = tstate;
         HEAD_UNLOCK();
     }
-
     return tstate;
 }
 
@@ -535,7 +525,7 @@ _PyThreadState_DeleteExcept(PyThreadState *tstate)
 
 
 PyThreadState *
-_PyThreadState_UncheckedGet(void)
+(_PyThreadState_UncheckedGet)(void)
 {
     return GET_TSTATE();
 }