• Andreas Haas's avatar
    [wasm][bigint] Allow only bigints as i64-global imports · f87505ca
    Andreas Haas authored
    The fuzzer found a crash when we want to execute the {valueOf} function
    of an imported value for an i64-global. The problem is that we cannot
    execute JavaScript at that moment (I did not check why, I guess we open
    some scope at some point). I checked the WebAssembly spec now, and it
    defines that only numbers are valid values for imported globals. I
    adjust our bigint implementation accordingly with this CL, i.e. that
    only bigint values are valid as imported i64-globalsl.
    I also created github issues to discuss this problem.
    
    R=jkummerow@chromium.org
    
    Bug: chromium:1001804
    Change-Id: I47f0b31fab53163346f341ad290fd3c58e7707bf
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1792167
    Commit-Queue: Andreas Haas <ahaas@chromium.org>
    Reviewed-by: 's avatarJakob Kummerow <jkummerow@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#63621}
    f87505ca
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