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/Lib/test/pickletester.py

@@ -1,3 +1,4 @@
+import cosmo
 import collections
 import copyreg
 # import dbm
@@ -1942,6 +1943,8 @@ class AbstractPickleTests(unittest.TestCase):
             self.assertEqual(y._reduce_called, 1)
 
     @no_tracing
+    @unittest.skipIf(cosmo.MODE in ("asan", "dbg"),
+                     "extremely slow in asan mode")
     def test_bad_getattr(self):
         # Issue #3514: crash when there is an infinite loop in __getattr__
         x = BadGetattr()
@@ -2092,6 +2095,8 @@ class AbstractPickleTests(unittest.TestCase):
                                      self.FRAME_SIZE_TARGET * 1)
                 self.check_frame_opcodes(pickled)
 
+    @unittest.skipIf(cosmo.MODE in ("asan", "dbg"),
+                     "extremely slow in asan mode")
     def test_framing_large_objects(self):
         N = 1024 * 1024
         obj = [b'x' * N, b'y' * N, b'z' * N]
@@ -2662,12 +2667,11 @@ class AbstractIdentityPersistentPicklerTests(unittest.TestCase):
                 for obj in [b"abc\n", "abc\n", -1, -1.1 * 0.1, str]:
                     self._check_return_correct_type(obj, proto)
 
-    # # TODO(jart): pycomp.com needs \N thing
-    # def test_protocol0_is_ascii_only(self):
-    #     non_ascii_str = "\N{EMPTY SET}"
-    #     self.assertRaises(pickle.PicklingError, self.dumps, non_ascii_str, 0)
-    #     pickled = pickle.PERSID + non_ascii_str.encode('utf-8') + b'\n.'
-    #     self.assertRaises(pickle.UnpicklingError, self.loads, pickled)
+    def test_protocol0_is_ascii_only(self):
+        non_ascii_str = "\N{EMPTY SET}"
+        self.assertRaises(pickle.PicklingError, self.dumps, non_ascii_str, 0)
+        pickled = pickle.PERSID + non_ascii_str.encode('utf-8') + b'\n.'
+        self.assertRaises(pickle.UnpicklingError, self.loads, pickled)
 
 
 class AbstractPicklerUnpicklerObjectTests(unittest.TestCase):