I'm not using the same exact libc++, no. I don't have a problem doing that, but I'd like to link v8 against MY libc++ instead of linking my app against v8's libc++. The reason is: I am compiling against a number of libraries, all of which are compiled against my libc++. Trying to change them all to compile against V8's libc++ is probably not possible.
I'm also a little suspicious that libc++ is the problem here because it works fine in release; which I would expect to be _more_ sensitive. In any case, if you can tell me how or point me to instructions on how to tell V8 which libc++ to use I will very happily implement that. On Thursday, July 18, 2019 at 1:22:04 AM UTC-4, Jakob Gruber wrote: > > On Wed, Jul 17, 2019 at 5:48 PM Christopher Nelson <nadias...@gmail.com > <javascript:>> wrote: > >> Thank you so much for the help that has been provided so far. Sadly, I >> tried both of these suggestions without success. >> >> First, I removed all of the build arguments except: >> >> is_debug = true >> target_cpu = "x64" >> v8_monolithic = true >> v8_enable_i18n_support = false >> >> I built this with much the same results. I also duplicated this problem >> on macOS with debug. (Release works fine on both platforms.) >> >> I also tried setting "use_custom_libcxx = false", but we use libc++ (the >> one shipped with clang) on Linux and macOS. I couldn't find a way to tell >> v8 to set -stdlib libc++ without it also wanting that to be the custom one >> v8 compiles. If I set this value to false then the flag is omitted and it >> picks up libstdc++ by default, which results in a lot of link errors. >> > > Just to confirm: are you linking your project against the same custom > libcxx that V8 uses? If yes, then we need to start looking elsewhere (than > use_custom_libcxx) for the problem. If no, that would still be my suspicion. > > Note also how the backtrace below is in a completely different spot in V8 > than the one you posted before. And this time in deallocate (before it was > in an allocation). > > >> >> My colleague and I have managed to duplicate this in the most trivial >> hello-world program, which just initializes the engine and creates an >> isolate. >> >> The interesting thing is that the d8 app created by the v8 build is fine. >> It is only applications that link against the v8 monolith outside the v8 >> build that experience the problem. We also accidentally noted that if we >> initialize the engine twice, the problem goes away. >> > >> As I say, this wasn't a problem in 7.2, but in 7.3+ it's happening with >> perfect reproducibility. For the record, here is the backtrace: >> >> #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 >> #1 0x00007ffff7b5a535 in __GI_abort () at abort.c:79 >> #2 0x00007ffff7bc1726 in __libc_message (action=action@entry=do_abort, >> fmt=fmt@entry=0x7ffff7ce7952 "%s\n") at ../sysdeps/posix/libc_fatal.c:181 >> #3 0x00007ffff7bc859a in malloc_printerr (str=str@entry=0x7ffff7ce5a9b >> "free(): invalid pointer") at malloc.c:5352 >> #4 0x00007ffff7bca3cc in _int_free (av=<optimized out>, p=<optimized >> out>, have_lock=<optimized out>) at malloc.c:4181 >> #5 0x0000000004da70e5 in __do_call () at >> ../../buildtools/third_party/libc++/trunk/include/new:319 >> #6 __do_deallocate_handle_size () at >> ../../buildtools/third_party/libc++/trunk/include/new:277 >> #7 __do_deallocate_handle_size_align () at >> ../../buildtools/third_party/libc++/trunk/include/new:247 >> #8 __libcpp_deallocate () at >> ../../buildtools/third_party/libc++/trunk/include/new:325 >> #9 deallocate () at >> ../../buildtools/third_party/libc++/trunk/include/memory:1816 >> #10 deallocate () at >> ../../buildtools/third_party/libc++/trunk/include/memory:1554 >> #11 ~basic_string () at >> ../../buildtools/third_party/libc++/trunk/include/string:2138 >> #12 Print () at ../../src/code-stub-assembler.cc:13702 >> #13 0x00000000051e254d in LoadKeyValuePairNoSideEffects () at >> gen/torque-generated/builtins-collections-from-dsl-gen.cc:533 >> #14 0x0000000004cfc7e1 in AddConstructorEntry () at >> ../../src/builtins/builtins-collections-gen.cc:163 >> #15 0x0000000004d10fb6 in operator() () at >> ../../src/builtins/builtins-collections-gen.cc:270 >> #16 __invoke<(lambda at >> ../../src/builtins/builtins-collections-gen.cc:267:22) &, >> v8::internal::compiler::Node *> () at >> ../../buildtools/third_party/libc++/trunk/include/type_traits:4399 >> #17 __call<(lambda at >> ../../src/builtins/builtins-collections-gen.cc:267:22) &, >> v8::internal::compiler::Node *> () at >> ../../buildtools/third_party/libc++/trunk/include/__functional_base:348 >> #18 operator() () at >> ../../buildtools/third_party/libc++/trunk/include/functional:1531 >> #19 __call_impl<std::__1::__function::__alloc_func<(lambda at >> ../../src/builtins/builtins-collections-gen.cc:267:22), >> std::__1::allocator<(lambda at >> ../../src/builtins/builtins-collections-gen.cc:267:22)>, void >> (v8::internal::compiler::Node *)> > () at >> ../../buildtools/third_party/libc++/trunk/include/functional:2014 >> #20 0x0000000004d76fb1 in operator() () at >> ../../buildtools/third_party/libc++/trunk/include/functional:2127 >> #21 operator() () at >> ../../buildtools/third_party/libc++/trunk/include/functional:2351 >> #22 BuildFastLoop () at ../../src/code-stub-assembler.cc:10997 >> #23 0x0000000004cfd8e0 in BuildFastLoop () at >> ../../src/code-stub-assembler.h:3062 >> #24 AddConstructorEntriesFromFastJSArray () at >> ../../src/builtins/builtins-collections-gen.cc:278 >> #25 0x0000000004cfcd55 in AddConstructorEntries () at >> ../../src/builtins/builtins-collections-gen.cc:207 >> #26 0x0000000004cfeebf in GenerateConstructor () at >> ../../src/builtins/builtins-collections-gen.cc:416 >> #27 0x0000000004cff596 in GenerateMapConstructorImpl () at >> ../../src/builtins/builtins-collections-gen.cc:740 >> #28 0x0000000004cff3ea in Generate_MapConstructor () at >> ../../src/builtins/builtins-collections-gen.cc:734 >> #29 0x0000000004c6b147 in BuildWithCodeStubAssemblerJS () at >> ../../src/builtins/setup-builtins-internal.cc:179 >> #30 SetupBuiltinsInternal () at >> ../../src/builtins/setup-builtins-internal.cc:353 >> #31 0x0000000004c62687 in SetupBuiltins () at >> ../../src/setup-isolate-full.cc:18 >> #32 0x0000000004395524 in Init () at ../../src/isolate.cc:3394 >> #33 0x0000000004394c4d in v8::internal::Isolate::InitWithoutSnapshot() () >> at ../../src/isolate.cc:3284 >> #34 0x0000000003f50007 in Initialize () at ../../src/api.cc:8211 >> #35 0x0000000003f5055f in New () at ../../src/api.cc:8223 >> #36 0x0000000003eb369c in hiram::js::isolate::isolate >> (this=0x7fffffffcf88) at ../../../../../engine/src/js/isolate.cpp:20 >> #37 0x0000000003dae967 in ____C_A_T_C_H____T_E_S_T____6 () at >> ../../../../../engine/test/test_element_node.cpp:62 >> #38 0x0000000003d01b33 in Catch::TestInvokerAsFunction::invoke >> (this=0x7677650) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:11841 >> #39 0x0000000003cfc6d6 in Catch::TestCase::invoke (this=0x76dfe60) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:11742 >> #40 0x0000000003cfc60a in Catch::RunContext::invokeActiveTestCase >> (this=0x7fffffffd818) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:10601 >> #41 0x0000000003cfb164 in Catch::RunContext::runCurrentTest >> (this=0x7fffffffd818, redirectedCout=..., redirectedCerr=...) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:10574 >> #42 0x0000000003cfa4fc in Catch::RunContext::runTest >> (this=0x7fffffffd818, testCase=...) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:10344 >> #43 0x0000000003cfe9fd in Catch::(anonymous namespace)::runTests >> (config=...) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:10903 >> #44 0x0000000003cfe4b2 in Catch::Session::runInternal >> (this=0x7fffffffdb90) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:11098 >> #45 0x0000000003cfe22b in Catch::Session::run (this=0x7fffffffdb90) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:11055 >> #46 0x0000000003d2d54a in Catch::Session::run<char> (this=0x7fffffffdb90, >> argc=1, argv=0x7fffffffdde8) at >> ../../../../../.mm/linux/amd64/debug/include/catch2/catch.hpp:10801 >> #47 0x0000000003d0fc24 in main (argc=1, argv=0x7fffffffdde8) at >> ../../../../../engine/test/main.cpp:25 >> >> This is the content of the main.cpp: >> >> std::unique_ptr<v8::Platform> platform = >> v8::platform::NewDefaultPlatform(); >> v8::V8::InitializePlatform(platform.get()); >> v8::V8::Initialize(); >> >> int result = Catch::Session().run(argc, argv); >> >> v8::V8::Dispose(); >> v8::V8::ShutdownPlatform(); >> >> And the code that is failing: >> >> create_params.array_buffer_allocator = >> v8::ArrayBuffer::Allocator::NewDefaultAllocator(); >> i = v8::Isolate::New(create_params); >> >> I'm trying more variations, but if there's something else I can do to >> help anyone help me, I will happily do so. >> >> Thanks again! >> >> -- >> -- >> v8-users mailing list >> v8-u...@googlegroups.com <javascript:> >> http://groups.google.com/group/v8-users >> --- >> You received this message because you are subscribed to the Google Groups >> "v8-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to v8-u...@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/v8-users/f81d746d-0ced-4841-8736-ed5d8ef90bc0%40googlegroups.com 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