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    Reland of Add errors for declarations which conflict with catch parameters.... · 819fe046
    bakkot authored
    Reland of Add errors for declarations which conflict with catch parameters. (patchset #1 id:1 of https://codereview.chromium.org/2112223002/ )
    
    Reason for revert:
    Correcting issue.
    
    Original issue's description:
    > Revert of Add errors for declarations which conflict with catch parameters. (patchset #6 id:100001 of https://codereview.chromium.org/2109733003/ )
    >
    > Reason for revert:
    > Fuzzer claims `try {  \"\" ; } catch(x) { let x1 = [1,,], x = x; }` causes a crash.
    >
    > Original issue's description:
    > > Add errors for declarations which conflict with catch parameters.
    > >
    > > Catch parameters are largely treated as lexical declarations in the
    > > block which contains their body for the purposes of early syntax errors,
    > > with some exceptions outlined in B.3.5. This patch introduces most of
    > > those errors, except those from `eval('for (var e of ...);')` inside of
    > > a catch with a simple parameter named 'e'.
    > >
    > > Note that annex B.3.5 allows var declarations to conflict with simple
    > > catch parameters, except when the variable declaration is the init of a
    > > for-of statement.
    > >
    > > BUG=v8:5112,v8:4231
    > >
    > > Committed: https://crrev.com/2907c726b2bb5cf20b2bec639ca9e6a521585406
    > > Cr-Commit-Position: refs/heads/master@{#37462}
    >
    > TBR=littledan@chromium.org
    > # Skipping CQ checks because original CL landed less than 1 days ago.
    > NOPRESUBMIT=true
    > NOTREECHECKS=true
    > NOTRY=true
    > BUG=v8:5112,v8:4231
    >
    > Committed: https://crrev.com/8834d5ecb559001c87c42322969471da60574a8c
    > Cr-Commit-Position: refs/heads/master@{#37464}
    
    R=littledan@chromium.org
    BUG=v8:5112,v8:4231
    
    Review-Url: https://codereview.chromium.org/2119933002
    Cr-Commit-Position: refs/heads/master@{#37728}
    819fe046
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