I cannot reproduce this bug with a tree pulled last week or with GNU make. nsIWorkerTest.idl worker/ worker/chrome.manifest worker/components/ worker/components/interfaces.manifest worker/components/WorkerTest.js worker/components/WorkerTest.manifest worker/components/WorkerTest.xpt worker/install.rdf worker/worker.js 0 [main] sh 9960 handle_exceptions: Exception: STATUS_ACCESS_VIOLATION 656 [main] sh 9960 open_stackdumpfile: Dumping stack trace to sh.exe.stackdump ... (a lot of files are listed) failed, return code 101120 c:\Users\...\config\makefiles\target_libs.mk:103:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -C files libs' failed, return code 2 c:\Users\...\config\makefiles\target_libs.mk:103:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -C dom-level2-html libs' failed, return code 2 c:\Users\...\config\makefiles\target_libs.mk:103:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -C mochitest libs' failed, return code 2 c:\Users\...\config\makefiles\target_libs.mk:103:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -C tests libs' failed, return code 2 c:\Users\...\config\makefiles\target_libs.mk:18:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -C dom libs' failed, return code 2 c:\Users\...\config\rules.mk:607:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py libs_tier_platform' failed, return code 2 c:\Users\...\config\rules.mk:572:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py tier_platform' failed, return code 2 c:\Users\...\client.mk:349:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -sj4 -C c:/Users/.../../firefox-debug-build' failed, return code 2 c:\Users\...\client.mk:149:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -f c:/Users/.../client.mk realbuild' failed, return code 2 my mozconfig is: mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/../firefox-debug-build mk_add_options MOZ_MAKE_FLAGS="-sj4" ac_add_options --enable-tests ac_add_options --enable-logging ac_add_options --disable-optimize ac_add_options --enable-debug ac_add_options --disable-installer The sh.exe.stackdump: MSYS-1.0.11 Build:2009-05-23 19:33 Exception: STATUS_ACCESS_VIOLATION at eip=60128864 eax=2F737265 ebx=0A011B80 ecx=6019D3BC edx=2F737267 esi=00271DF8 edi=0028B3A8 ebp=00269D58 esp=00269D40 program=C:\mozilla-build\msys\bin\sh.exe cs=0023 ds=002B es=002B fs=0053 gs=002B ss=002B Stack trace: Frame Function Args 00269D58 60128864 (2F737265, 0028B3A8, 0028B3A8, 00000000) 00269D00 601285E3 (00000000, 00000000, 00000000, 00000000) End of stack trace

Oops, not dom/wokers. I misread the console log. worker/worker.js 0 [main] sh 9960 handle_exceptions: Exception: STATUS_ACCESS_VIOLATION 656 [main] sh 9960 open_stackdumpfile: Dumping stack trace to sh.exe.stackdump c:\Users\...\firefox-debug-build\dom\tests\mochitest\dom-level2-html\files\Makefile:227:0: command ' (a lot of files) ' failed, return code 101120 c:\Users\...\config\makefiles\target_libs.mk:103:0: command 'c:/mozilla-build/python/python.exe c:/Users/.../build/pymake/pymake/../make.py -C files libs' failed, return code 2 So, building dom/tests/mocitest/dom-level2-html, sh.exe crashed.

Bug 770558?

(In reply to Masatoshi Kimura [:emk] from comment #2) > Bug 770558? Oh, that's it! Thanks.