Better _ZSt15get_new_handlerv fix

Author: DinoV

Include/internal/pycore_mimalloc.h

@@ -14,6 +14,9 @@
 
 #ifdef WITH_MIMALLOC
 #  define MI_NO_PTHREAD_ATFORK 1
+// CPython never uses mimalloc's C++ operator new APIs, so don't define a weak
+// std::get_new_handler() (_ZSt15get_new_handlerv) in libpython.
+#  define MI_NO_CXX_NEW_HANDLER 1
 #  ifdef MS_WINDOWS
 // Initialize from a CRT initializer and use FLS for thread cleanup instead
 // of TLS callbacks, which run during DLL attach before the CRT is set up.

Tools/build/smelly.py

@@ -20,7 +20,7 @@
 # mimalloc doesn't use static, but it's symbols are not exported
 # from the shared library.  They do show up in the static library
 # before its linked into an executable.
-ALLOWED_STATIC_PREFIXES = ('mi_', '_mi_', '__mi', '_ZSt')
+ALLOWED_STATIC_PREFIXES = ('mi_', '_mi_', '__mi')
 
 # "Legacy": some old symbols are prefixed by "PY_".
 EXCEPTIONS = frozenset({