I just made a build of Fennec/Android with DMD and it can't load Gecko. E/GeckoLibLoad( 6272): Couldn't get a handle to libxul! E/GeckoLibLoad( 6272): Throw W/dalvikvm( 6272): threadid=10: thread exiting with uncaught exception (group=0x40015560) E/GeckoAppShell( 6272): >>> REPORTING UNCAUGHT EXCEPTION FROM THREAD 12 ("Gecko") E/GeckoAppShell( 6272): java.lang.Exception: Error loading gecko libraries E/GeckoAppShell( 6272): at org.mozilla.gecko.mozglue.GeckoLoader.loadGeckoLibsNative(Native Method) E/GeckoAppShell( 6272): at org.mozilla.gecko.mozglue.GeckoLoader.loadGeckoLibs(GeckoLoader.java:251) E/GeckoAppShell( 6272): at org.mozilla.gecko.GeckoThread.initGeckoEnvironment(GeckoThread.java:65) E/GeckoAppShell( 6272): at org.mozilla.gecko.GeckoThread.run(GeckoThread.java:94) I just followed instructions on the wiki. I tried both a non-opt debug and a non-debug opt build. Both were clobber builds. DMD would be very nice to investigate bug 869076.

What does about:memory look like? Is there actually high heap-unclassified? kats is probably your best source of information about looking at Android memory usage, but it looks like he's away at the moment.

In the present bug, I can't even load Gecko at all, so in particular I don't have an about:memory. I'll try that on bug 869076 though.

My guess is that loading libdmd off /sdcard (which you fail to mention in this bug but i saw mentioned on irc) doesn't work because /sdcard is mounted noexec, which prevents libraries to be loaded from there. And since libxul depends on libdmd, failing to load libdmd means you can't load libxul.

I also tried with libdmd.so in /data/local with same results. (This is where gdbserver is, so it's got to be executable).

Add DEFINES += -DMOZ_DEBUG_LINKER=1 to mozglue/linker/Makefile.in, rebuild objdir/mozglue/linker and try again.

Unfortunately, I still get the same error.

erf, i forgot the most important: Attach the resulting logcat.

Oh right, sorry :-) here is the resulting log. My command line was: adb shell am start -n org.mozilla.fennec_bjacob/.App --es env0 MOZ_REPLACE_MALLOC_LIB=/data/local/libdmd.so --es env1 DMD=1

It says "couldn't find libdmd.so", yet my above am start command line has MOZ_REPLACE_MALLOC_LIB=/data/local/libdmd.so and there is a /data/local/libdmd.so on my device (with x permissions).

(In reply to Benoit Jacob [:bjacob] from comment #9) > It says "couldn't find libdmd.so", yet my above am start command line has > MOZ_REPLACE_MALLOC_LIB=/data/local/libdmd.so and there is a > /data/local/libdmd.so on my device (with x permissions). You should add some debugging log to replace_malloc_init_funcs to see if it - it is run at all - it loads libdmd.so successfully