I collected a gdb backtrace and it shows something which is potentially interesting
(gdb) info stack #0 0x00007ffff4d72ae6 in v8::base::OS::Abort() () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #1 0x00007ffff4d6af7c in v8::base::FatalOOM(v8::base::OOMType, char const*) () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #2 0x00007ffff440c58c in v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, v8::OOMDetails const&) () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #3 0x00007ffff46f998a in v8::internal::(anonymous namespace)::DateTimePatternGeneratorCache::CreateGenerator(v8::internal::Isolate*, icu_73::Locale const&) () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #4 0x00007ffff46f7e06 in v8::internal::JSDateTimeFormat::CreateDateTimeFormat(v8::internal::Isolate*, v8::internal::Handle<v8::internal::Map>, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, v8::internal::JSDateTimeFormat::RequiredOption, v8::internal::JSDateTimeFormat::DefaultsOption, char const*) () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #5 0x00007ffff46f8efa in v8::internal::JSDateTimeFormat::New(v8::internal::Isolate*, v8::internal::Handle<v8::internal::Map>, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, char const*) () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #6 0x00007ffff4dafd4e in v8::internal::Builtin_DateTimeFormatConstructor(int, unsigned long*, v8::internal::Isolate*) () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #7 0x00007ffff4c335b6 in Builtins_CEntry_Return1_ArgvOnStack_BuiltinExit () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #8 0x00007ffff4b9f3fc in Builtins_InterpreterPushArgsThenFastConstructFunction () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #9 0x00002136d010c8f9 in ?? () #10 0x00002136d010c8f9 in ?? () #11 0x0000000500000000 in ?? () #12 0x000027e541540c19 in ?? () #13 0x000027e541540c19 in ?? () #14 0x000027e541540c19 in ?? () #15 0x00001bbc90f9d349 in ?? () #16 0x0000000000000030 in ?? () #17 0x00007fffffff7940 in ?? () #18 0x00007ffff4d2736c in Builtins_ConstructHandler () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so #19 0x0000207ba8729fe1 in ?? () #20 0x00001bbc90fb50b9 in ?? () #21 0x000027e541540061 in ?? () #22 0xfffffffffffffffe in ?? () #23 0x00007ffff4d1b0a0 in Builtins_SetNamedPropertyHandler () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so Backtrace stopped: previous frame inner to this frame (corrupt stack?) As we can see from #3 #3 0x00007ffff46f998a in v8::internal::(anonymous namespace)::DateTimePatternGeneratorCache::CreateGenerator(v8::internal::Isolate*, icu_73::Locale const&) () from /home/angelo/.local/lib/python3.9/site-packages/_STPyV8.cpython-39-x86_64-linux-gnu.so the CreatePattern second parameter type is supposed to be icu_73::Local. As I mentioned in a previous email, Debian 11 is the only environment that allows me to reproduce the issue reliably while the issue is not present in all the other environments. So I checked the system libicu version and realized that libicu 67 is installed on Debian 11 and libicu 74 is installed on all the other systems. During the build workflow, I statically link libv8_monolith to STPyV8 so I don't really expect but if V8 ends up using the system libicu (because I do not link statically the third party library too? is it really required?) and that libicu 73 API is not compatible with the libicu 67 one that could explain what I am observing. Angelo -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/8694b643-1966-49e9-9735-01e6d1af6fd8n%40googlegroups.com.