OSX-only. I've closed comm-central. https://tbpl.mozilla.org/php/getParsedLog.php?id=33735544&tree=Thunderbird-Trunk TB OS X 10.7 comm-central nightly on 2014-01-29 03:06:59 PST for push 1e1da3a4dac3 slave: bld-lion-r5-080 /usr/local/bin/ccache /builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/../clang/bin/clang++ -arch i386 -o Unified_cpp_layout_svg1.o -c -fvisibility=hidden -DMOZILLA_INTERNAL_API -DIMPL_LIBXUL -DSTATIC_EXPORTABLE_JS_API -DNO_NSPR_10_SUPPORT -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg -I. -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg/../../content/base/src -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg/../../content/svg/content/src -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg/../../widget -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg/../base -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg/../generic -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg/../style -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/mozilla/layout/svg/../xul -I../../dist/include -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/objdir-tb/i386/mozilla/dist/include/nspr -I/builds/slave/tb-c-cen-osx64-ntly-0000000000/build/objdir-tb/i386/mozilla/dist/include/nss -fPIC -Qunused-arguments -DMOZILLA_CLIENT -include ../../mozilla-config.h -MD -MP -MF .deps/Unified_cpp_layout_svg1.o.pp -Qunused-arguments -Qunused-arguments -Wall -Wpointer-arith -Woverloaded-virtual -Werror=return-type -Werror=int-to-pointer-cast -Wtype-limits -Wempty-body -Wsign-compare -Wno-invalid-offsetof -Wno-c++0x-extensions -Wno-extended-offsetof -Wno-unknown-warning-option -Wno-return-type-c-linkage -Wno-mismatched-tags -isysroot /Developer/SDKs/MacOSX10.6.sdk -fno-exceptions -fno-strict-aliasing -fno-rtti -ffunction-sections -fdata-sections -fno-exceptions -fno-math-errno -std=gnu++0x -pthread -DNO_X11 -pipe -DNDEBUG -DTRIMMED -g -O3 -fno-omit-frame-pointer /builds/slave/tb-c-cen-osx64-ntly-0000000000/build/objdir-tb/i386/mozilla/layout/svg/Unified_cpp_layout_svg1.cpp In file included from Unified_cpp_layout_xul1.cpp:29: ../../../../../mozilla/layout/xul/nsMenuFrame.cpp:682:64: error: no member named 'anonid' in 'nsGkAtoms' doc->GetAnonymousElementByAttribute(mContent, nsGkAtoms::anonid, id); ~~~~~~~~~~~^ 1 error generated. make[8]: *** [Unified_cpp_layout_xul1.o] Error 1

Does comm-central build with --disable-accessibility? See bug 965238.

On OSX, indeed :) http://mxr.mozilla.org/comm-central/source/mail/confvars.sh#22

Pushed to try to see if enabling accessibility still gives issues or not: https://hg.mozilla.org/try-comm-central/rev/d9e2b1f28176

Fixed by bug 965238. I've reopened comm-central.