We recently moved some of the Chromium Mac bots on the fyi waterfall to using release builds with -O1. Yesterday morning, when I was doing test runs, everything was fine. But today, v8_snapshot fails ( http://build.chromium.org/buildbot/waterfall.fyi/builders/Mac%20UI%201%20of%203%20(valgrind)/builds/9/steps/compile/logs/stdio). If you look at the step that runs mksnapshot, you won't see any output, the app is coring and since it's exec'd directly, the shell doesn't print anything either. Doing a little testing, if you do a Release build with -O0 or -Os things work, but if you do the build with -O1, -O2, -O3, mksnapshot cores. I haven't tracked down what version of v8 we were on yesterday when I was testing and it worked, but it sounds like something that recently changed. TVL
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