+++ This bug was initially created as a clone of Bug #1573731 +++
This bug is for crash report bp-7155c1a1-e483-404c-84ee-facc60190814.
Spinning this off from the original cloned bug, since per Bug 1573731#c26 there are still crashes on all platforms that aren't related to the diagnostic assert.
Here is part of that comment for reference:
-603 of them do not involve the diagnostic assert, e.g. Windows, Linux, Mac. These have continued.
The non-diagnostic-assert ones have a crash address and crash reason field that is consistent with a diagnostic assert (e.g. 0x7ffd697135c7 and EXCEPTION_BREAKPOINT on Windows; 0 and SIGSEGV on Linux), but lack a "MOZ_CRASH Reason (Raw)" field. I can't see what code remaining within InitStaticPrefsFromShared() could cause crashes like these.
Top 10 frames of crashing thread:
0 xul.dll mozilla::StaticPrefs::InitStaticPrefsFromShared obj-firefox/dist/include/mozilla/StaticPrefList_dom.h:1286
1 xul.dll mozilla::ipc::SharedPreferenceDeserializer::DeserializeFromSharedMemory ipc/glue/ProcessUtils_common.cpp:176
2 xul.dll mozilla::dom::ContentProcess::Init dom/ipc/ContentProcess.cpp:174
3 xul.dll XRE_InitChildProcess toolkit/xre/nsEmbedFunctions.cpp:739
4 firefox.exe static int content_process_main ipc/contentproc/plugin-container.cpp:56
5 firefox.exe static int NS_internal_main browser/app/nsBrowserApp.cpp:267
6 firefox.exe wmain toolkit/xre/nsWindowsWMain.cpp:131
7 firefox.exe static int __scrt_common_main_seh f:/dd/vctools/crt/vcstartup/src/startup/exe_common.inl:288
8 kernel32.dll BaseThreadInitThunk
9 ntdll.dll RtlUserThreadStart