The following testcase asserts on TI revision d3215d1e985a (run with -m -n -a), tested on 64 bit: var HOTLOOP = 100; // works, 10 isnt enough though function jit(on) { options().match } function options() { return "tracejit,methodjit"; } gczeal(2); for (i = 0; i < HOTLOOP ; ++i) { jit(jit(42, [])); }

We weren't always emitting the necessary rejoin sites in call paths, so that if we invoked a call IC from within an inlined frame which triggered a recompilation, we couldn't rejoin. This coalesces things so that the rejoin sites are always generated in the same way and place for calls. http://hg.mozilla.org/projects/jaegermonkey/rev/74a8fb1bbec5

A testcase for this bug was automatically identified at js/src/jit-test/tests/jaeger/recompile/bug648843.js.