// Adapted from randomly chosen test: js/src/jit-test/tests/gc/bug-1209001.js oomTest(() => parseModule('import v from "mod";')); fullcompartmentchecks(true); asserts js debug shell on m-c changeset 4e164269cf88 with --fuzzing-safe --no-threads --ion-eager --no-baseline at Assertion failure: JSVAL_IS_DOUBLE_IMPL(data), at dist/include/js/Value.h Configure options: CC="clang -Qunused-arguments" CXX="clang++ -Qunused-arguments" AR=ar AUTOCONF=/usr/local/Cellar/autoconf213/2.13/bin/autoconf213 sh /Users/skywalker/trees/mozilla-central/js/src/configure --target=x86_64-apple-darwin12.5.0 --enable-debug --disable-threadsafe --enable-more-deterministic --with-ccache --enable-gczeal --enable-debug-symbols --disable-tests python -u ~/funfuzz/js/compileShell.py -b "--enable-debug --enable-more-deterministic" -r 4e164269cf88 autoBisect shows this is probably related to the following changeset: The first bad revision is: changeset: https://hg.mozilla.org/mozilla-central/rev/9c365490d4ce user: Jon Coppeard date: Tue Oct 13 13:37:07 2015 +0100 summary: Bug 1212469 - Make oomTest() into a shell function r=nbp Jon, is bug 1212469 a likely regressor?

(lldb) bt 5 * thread #1: tid = 0x2230b7, 0x00000001000291fb js-dbg-64-dm-darwin-4e164269cf88`JS::Value::toPrivate(this=<unavailable>) const + 91 at Value.h:1331, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0) * frame #0: 0x00000001000291fb js-dbg-64-dm-darwin-4e164269cf88`JS::Value::toPrivate(this=<unavailable>) const + 91 at Value.h:1331 frame #1: 0x00000001001567a3 js-dbg-64-dm-darwin-4e164269cf88`js::ModuleObject::importBindings(this=<unavailable>) + 99 at ModuleObject.cpp:598 frame #2: 0x000000010015621e js-dbg-64-dm-darwin-4e164269cf88`js::ModuleObject::trace(trc=0x00007fff5fbfee40, obj=0x0000000103d5d100) + 142 at ModuleObject.cpp:722 frame #3: 0x0000000100543c80 js-dbg-64-dm-darwin-4e164269cf88`JSObject::traceChildren(this=0x0000000103d5d100, trc=0x00007fff5fbfee40) + 64 at jsobj.cpp:3718 frame #4: 0x00000001008e5cc8 js-dbg-64-dm-darwin-4e164269cf88`js::TraceChildren(trc=<unavailable>, thing=<unavailable>, kind=<unavailable>) + 40 at Tracer.cpp:204 (lldb)

We need to check whether the module import bindings slot has been initialised before trying to trace it.

This is related to modules and not the oomTest() function.