Hi Jakob, Thanks for your reply. It looks like using Microsoft's C++ library instead of libc++ is somewhat exotic for v8. Unfortunately there are cases where it's almost impossible to switch to libc++.
Since I have a chance to get some feedback here of how to address this issue, I'm going to try to give you as much info as possible. `mksnapshot.exe` aborts at `VirtualMemoryCage::InitReservation` at following check: CHECK(IsAligned(params.reservation_size, allocate_page_size)); When adding following print on the line before i::PrintF(stdout, "VirtualMemoryCage::InitReservation %u %u\n", params.reservation_size, allocate_page_size); it prints VirtualMemoryCage::InitReservation 3356617664 65536 It looks like the supplied `params.reservation_size` is not aligned. Full call stack is included in screenshot below (sorry for the screenshot, I couldn't find a way to copy text from WinDbg) I'm happy to investigate further, but wanted to send this out in case there is anything specific that would be helpful. Jean-Claude On Tue, Aug 8, 2023, at 12:13 PM, Jakob Gruber wrote: > Hi Jean-Claude, > > no, we don't have a lot of test coverage for `use_custom_libcxx=false`, this > mode is only supported on a best-effort basis. > > For debugging: a backtrace and symbols would be useful. Does running > `mksnapshot` in a debugger give more infos? Also, a bisect to find the > culprit change would be very helpful. > > On Thu, Aug 3, 2023 at 6:54 PM Jean-Claude Monnin <jc_mon...@emailplus.org> > wrote: >> Hi, >> >> On windows, the v8 version 11.5 build fails when generating the snapshot >> with following error: >> >> C:/Users/jean-claude/Documents/src/google/depot_tools/bootstrap-2@3_8_10_chromium_26_bin/python3/bin/python3.exe >> ../../tools/run.py ./mksnapshot --turbo_instruction_scheduling >> --target_os=win --target_arch=x64 --embedded_src gen/embedded.S >> --embedded_variant Default --random-seed 314159265 --startup_blob >> snapshot_blob.bin --no-native-code-counters >> Return code is 2147483651 <tel:(214)%20748-3651> >> >> These are the options used (args.gn): >> is_official_build = true >> target_cpu = "x64" >> is_component_build = true >> use_custom_libcxx = false >> chrome_pgo_phase = false >> treat_warnings_as_errors = false >> fatal_linker_warnings = false >> symbol_level = 0 >> >> When using `is_debug=false` instead of `is_official_build = true` it builds >> fine, but it comes with performance regressions compared to older version >> 9.3 build with `is_official_build = true`. >> >> If using either `is_component_build = false` or `use_custom_libcxx = true`, >> it builds fine too, however it's not really an option as I need a dll build >> and I need to use Microsoft's C++ standard library because third party >> dependencies prevents us to use libc++. >> >> I also tried version 11.4 and 11.6 and they give the same error. >> >> Any hints in how to diagnose/fix that would be appreciated. >> >> Auxiliary question: Is any big project using `use_custom_libcxx = false` >> (eg. Microsoft's C++ standard library), or is this untested? >> Chrome/node/deno all use libc++? >> >> Best regards, >> Jean-Claude >> >> -- >> -- >> v8-users mailing list >> v8-users@googlegroups.com >> 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-users+unsubscr...@googlegroups.com >> <mailto:v8-users%2bunsubscr...@googlegroups.com>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/v8-users/984f3518-4b8e-4403-b794-923be66ccf08%40app.fastmail.com. > > > -- > -- > v8-users mailing list > v8-users@googlegroups.com > 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-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-users/CAH3p7oO%2BEkjhuGaa9nXVWHd9Da3W4h0mr3ychCWu4J3gqRut8Q%40mail.gmail.com > > <https://groups.google.com/d/msgid/v8-users/CAH3p7oO%2BEkjhuGaa9nXVWHd9Da3W4h0mr3ychCWu4J3gqRut8Q%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- -- v8-users mailing list v8-users@googlegroups.com 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-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-users/7d4484d9-13bd-4f86-be64-79b12abc0ec9%40app.fastmail.com.
