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Regression in gunzip in 5.9.0 -- GZ files that used to uncompress no longer do #5871

@tstanev

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@tstanev

Using the built-in gunzip results in error on certain gzip files (example attached). The error is code -3, Z_DATA_ERROR, "unknown compression method". The file used to gunzip fine with version 5.6.0 of node. Likely culprit (just guessing) is #5120. The same file can be decompressed without error using the OSX gunzip utility on the command line.
165.gz

  • 5.9.0
  • Darwin man7mx6h12.ads.autodesk.com 15.3.0 Darwin Kernel Version 15.3.0: Thu Dec 10 18:40:58 PST 2015; root:xnu-3248.30.4~1/RELEASE_X86_64 x86_64
  • zlib

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