• Jakob Kummerow's avatar
    [ubsan] Fix various ClusterFuzz-found issues · 91f0cd00
    Jakob Kummerow authored
    Fixing a few float and int overflows.
    Drive-by fix: with --experimental-wasm-bigint, Number values
    may not be used to initialize i64-typed globals. The existing
    code for doing that relied on UB; since it's a spec violation
    the fix is to throw instead.
    
    No regression test for 933103 because it will OOM anyway.
    No regression test for 932896 because it would be extremely slow.
    
    Bug: chromium:927894, chromium:927996, chromium:930086, chromium:932679, chromium:932896, chromium:933103, chromium:933134
    Change-Id: Iae1c1ff1038af4512a52d3e56b8c4b75f2233314
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1495911
    Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
    Reviewed-by: 's avatarMichael Starzinger <mstarzinger@chromium.org>
    Reviewed-by: 's avatarAdam Klein <adamk@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#60075}
    91f0cd00
representation-change.cc 54.8 KB