lukechilds/node - node - Gitea: Git with a cup of tea

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Author	SHA1	Message	Date
Michaël Zasso	1ff512c185	deps: backport e427300 from upstream V8 Original commit message: Properly handle holes following spreads in array literals Before this change, the spread desugaring would naively call `%AppendElement($R, the_hole)` and in some cases $R would have a non-holey elements kind, putting the array into the bad state of exposing holes to author code. This patch avoids calling %AppendElement with a hole, instead simply incrementing $R.length when it sees a hole in the literal (this is safe because $R is known to be an Array). The existing logic for elements transitions takes care of giving the array a holey ElementsKind. BUG=chromium:644215 Review-Url: https://codereview.chromium.org/2321533003 Cr-Commit-Position: refs/heads/master@{#39294} Fixes: https://github.com/nodejs/node/issues/12018 PR-URL: https://github.com/nodejs/node/pull/12037 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Myles Borins <myles.borins@gmail.com>	8 years ago

Author

SHA1

Message

Date

Michaël Zasso

1ff512c185

deps: backport e427300 from upstream V8

Original commit message:

    Properly handle holes following spreads in array literals

    Before this change, the spread desugaring would naively call
    `%AppendElement($R, the_hole)` and in some cases $R would have
    a non-holey elements kind, putting the array into the bad state
    of exposing holes to author code.

    This patch avoids calling %AppendElement with a hole, instead
    simply incrementing $R.length when it sees a hole in the literal
    (this is safe because $R is known to be an Array). The existing
    logic for elements transitions takes care of giving the array a
    holey ElementsKind.

    BUG=chromium:644215

    Review-Url: https://codereview.chromium.org/2321533003
    Cr-Commit-Position: refs/heads/master@{#39294}

Fixes: https://github.com/nodejs/node/issues/12018

PR-URL: https://github.com/nodejs/node/pull/12037
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

8 years ago

1 Commits (827411c1c0f053cc641c238803d4b4f50c735679)