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Report hash generation module

Multiple hash types are available:

You can use this library to generate report hash for these types by using the get_report_hash function.

Generate path sensitive report hash

get_report_hash function can be used to generate report hash with bug path if the hash type parameter is PATH_SENSITIVE.

High level overview of the hash content:

  • file_name from the main diag section.
  • checker name.
  • checker message.
  • line content from the source file if can be read up.
  • column numbers from the main diag section.
  • range column numbers only from the control diag sections if column number in the range is not the same as the previous control diag section number in the bug path. If there are no control sections event section column numbers are used.

Note: as the main diagnostic section the last element from the bug path is used.

Generate context sensitive report hash

get_report_hash function can be used to generate report hash without bug path if the hash type parameter is CONTEXT_FREE.

High level overview of the hash content:

  • file_name from the main diag section.
  • checker message.
  • line content from the source file if can be read up. All the whitespaces from the source content are removed.
  • column numbers from the main diag sections location.

Generate path hash

get_report_path_hash can be used to get path hash for the given bug path which can be used to filter deduplications of multiple reports.

License

The project is licensed under Apache License v2.0 with LLVM Exceptions. See LICENSE.TXT for details.