tor-browser

The Tor Browser
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oom-tracking-line-starts-in-tokenizer.js (899B)

      1 // Constraints on this test's appearance:
      2 //
      3 //   * |TokenStream::SourceCoords::add| must try to allocate memory.  (This test
      4 //     ensures this happens by making the function below >=128 lines long so
      5 //     that |SourceCoords::lineStartOffsets_| must convert to heap storage.  The
      6 //     precise approach doesn't matter.)
      7 //   * That allocation attempt must fail (by forced simulated OOM, here).
      8 //
      9 // It'd be nice to build up the function programmatically, but it appears that
     10 // the above only happens if the provided function has a lazy script.  Cursory
     11 // attempts to relazify |Function("...")| didn't work, so this fuzzer-like
     12 // version had to be used instead.
     13 if ("oomTest" in this) {
     14  oomTest(function() {
     15      try {
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    139      } catch(e) {
    140          ;
    141      }
    142  })
    143 }