There are lots of build failures for current loom/loom (fibers): https://builds.shipilev.net/openjdk-loom/ This patch the first stab at fixing x86_{32,64} build failures: http://cr.openjdk.java.net/~shade/loom/build-fixes-x86/webrev.01/ Please push where and how you see fit. Probably squashing all changes into one. Thanks, -Aleksey