Dwarf5 fixes [2 of 5]: Handle .debug_str_offsets properly.

Second of 5 small patches to fix various breakpad issues found
while testing dump_syms on DWARF v5 in ChromeOS.

This patch adds code to properly find & parse the
DW_AT_str_offsets_base attribute, and use it to handle strings
of the forms DW_FORM_strx, DW_FORM_strx1..DW_FORM_strx4 This is the
largest of the DWARF5 fixes.  It also includes a unittest to test
using a string offset.

Change-Id: I5d1def862d9d91cae4b2853578441e04ea85449d
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2634547
Reviewed-by: Sterling Augustine <saugustine@google.com>
5 files changed
tree: 8ae6390b94cb4f153b5b28a3aa52ddf7386442e7
  1. .github/
  2. android/
  3. autotools/
  4. docs/
  5. m4/
  6. scripts/
  7. src/
  8. .clang-format
  9. .gitignore
  10. .travis.yml
  11. aclocal.m4
  12. appveyor.yml
  13. AUTHORS
  14. breakpad-client.pc.in
  15. breakpad.pc.in
  16. ChangeLog
  17. codereview.settings
  18. configure
  19. configure.ac
  20. default.xml
  21. DEPS
  22. INSTALL
  23. LICENSE
  24. Makefile.am
  25. Makefile.in
  26. NEWS
  27. README.ANDROID
  28. README.md
README.md

Breakpad

Breakpad is a set of client and server components which implement a crash-reporting system.

Getting started (from master)

  1. First, download depot_tools and ensure that they’re in your PATH.

  2. Create a new directory for checking out the source code (it must be named breakpad).

    mkdir breakpad && cd breakpad
    
  3. Run the fetch tool from depot_tools to download all the source repos.

    fetch breakpad
    cd src
    
  4. Build the source.

    ./configure && make
    

    You can also cd to another directory and run configure from there to build outside the source tree.

    This will build the processor tools (src/processor/minidump_stackwalk, src/processor/minidump_dump, etc), and when building on Linux it will also build the client libraries and some tools (src/tools/linux/dump_syms/dump_syms, src/tools/linux/md2core/minidump-2-core, etc).

  5. Optionally, run tests.

    make check
    
  6. Optionally, install the built libraries

    make install
    

If you need to reconfigure your build be sure to run make distclean first.

To update an existing checkout to a newer revision, you can git pull as usual, but then you should run gclient sync to ensure that the dependent repos are up-to-date.

To request change review

  1. Follow the steps above to get the source and build it.

  2. Make changes. Build and test your changes. For core code like processor use methods above. For linux/mac/windows, there are test targets in each project file.

  3. Commit your changes to your local repo and upload them to the server. http://dev.chromium.org/developers/contributing-code e.g. git commit ... && git cl upload ... You will be prompted for credential and a description.

  4. At https://chromium-review.googlesource.com/ you'll find your issue listed; click on it, then “Add reviewer”, and enter in the code reviewer. Depending on your settings, you may not see an email, but the reviewer has been notified with google-breakpad-dev@googlegroups.com always CC’d.