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    // REPRODUCTIONS · GALLERY

    Real bugs, real runtimes, in your browser.

    Each card is a real bug from a real upstream project, reproduced in your browser via a WebAssembly language runtime. The verdict appears at the top once the runtime finishes loading.

    // CATALOGUE · FACETED

    Layer
    Language
    Severity
    showing 10 of 10
    L1 · WASMcpython-137205

    cpython#137205

    python/cpython#137205

    lang pythonseverity spec-violationsymptom fk-pragma-silently-dropped
    sqlite3pragmaforeign-keysautocommit
    L1 · WASMdateutil-1478

    dateutil#1478

    dateutil/dateutil#1478

    lang pythonseverity bugsymptom inverted-utc-offset-sign
    python-dateutilparsertimezoneiso8601utc-offset
    L1 · WASMlark-1585

    lark#1585

    lark-parser/lark#1585

    lang pythonseverity bugsymptom lalr-construction-infinite-loop
    larklalrcykgrammar-priorityinfinite-loop
    L1 · WASMnumpy-28287

    numpy#28287

    numpy/numpy#28287

    lang pythonseverity bugsymptom ordering-non-transitive
    timedelta64comparisondatetime-units
    L1 · WASMpandas-56679

    pandas#56679

    pandas-dev/pandas#56679

    lang pythonseverity regressionsymptom dtype-mismatch
    empty-seriesempty-dataframetype-inference
    L1 · WASMruby-21709

    ruby#21709

    ruby/ruby#21709

    lang rubyseverity bugsymptom regexp-interpolation-encoding-mismatch
    regexpstring-interpolationencodingonigmo
    L2 · Dockerbash-local-shadows-exit

    bash

    bash `local` shadows command-substitution exit code

    lang shellseverity footgunsymptom local-shadows-exit-status
    bashcommand-substitutionexit-code
    L2 · Dockerfind-xargs-whitespace

    find

    `find … | xargs cmd` is unsafe for whitespace in filenames

    lang shellseverity footgunsymptom whitespace-unsafe-pipeline
    findxargswhitespacefilenames
    L2 · Dockerflock-is-advisory

    flock

    `flock(2)` is advisory only

    lang shellseverity spec-violationsymptom advisory-lock-bypass
    flockfilesystemconcurrency
    L2 · Dockerpostgres-lost-update

    postgres

    PostgreSQL lost update under READ COMMITTED

    lang sqlseverity dataracesymptom lost-update-read-committed
    postgresqlisolation-levelconcurrency

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