GDB no longer works for GCC-generated executables on Sequoia?

[adah1972]

Output of brew config

HOMEBREW_VERSION: 4.4.22-90-g0e1d945
ORIGIN: https://github.com/Homebrew/brew
HEAD: 0e1d94506837ff39def056eaa365fa4d6aa07ca8
Last commit: 30 hours ago
Branch: master
Core tap HEAD: acd55f62d58f0f53d86d6dcc442d6a23d02e5eab
Core tap last commit: 8 months ago
Core tap JSON: 01 Mar 15:29 UTC
Core cask tap HEAD: 37a15905b88846b6f73a1367445f339894179f78
Core cask tap last commit: 8 months ago
Core cask tap JSON: 01 Mar 15:29 UTC
HOMEBREW_PREFIX: /usr/local
HOMEBREW_AUTO_UPDATE_SECS: 86400
HOMEBREW_BAT_THEME: GitHub
HOMEBREW_CASK_OPTS: []
HOMEBREW_EDITOR: /usr/local/bin/vim
HOMEBREW_GITHUB_API_TOKEN: set
HOMEBREW_MAKE_JOBS: 16
HOMEBREW_NO_VERIFY_ATTESTATIONS: set
HOMEBREW_SORBET_RUNTIME: set
http_proxy: http://127.0.0.1:7890
https_proxy: http://127.0.0.1:7890
no_proxy: localhost,.cn
Homebrew Ruby: 3.3.7 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.7/bin/ruby
CPU: 16-core 64-bit kabylake
Clang: 16.0.0 build 1600
Git: 2.48.1 => /usr/local/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 15.3.1-x86_64
CLT: 16.2.0.0.1.1733547573
Xcode: N/A

Output of brew doctor

Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: No Cask quarantine support available: unknown reason.

Warning: Some installed kegs have no formulae!
This means they were either deleted or installed manually.
You should find replacements for the following formulae:
  python@2
  python-urllib3
  mongodb-community@4.2
  unrar
  python-typing-extensions

Warning: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  lbzip2
  mysql@5.7
  neofetch
  openssl@1.1
  python@3.8

Warning: The following formulae have the same name as core formulae:
  brewsci/science/lsd
  brewsci/science/soplex
  brewsci/science/triangle
Their taps are in use, so you must use these full names throughout Homebrew.

Description of issue

Before I upgraded to Sequoia, I was able to use g++ -gdwarf-3 to build a program, and use gdb to debug it (though there are always hassles, like codesigning and first-time hangs). But now I cannot in Sequoia.

However, the behaviour is quite complicated, and I am not even sure whom to blame: gcc, gdb, and macOS might all be involved.

1. The problematic combination. Whatever options I use (I tried -g, -gdwarf-3, -gdwarf-4, among others) for gcc, setting a breakpoint on the resulting executable in gdb gives a message like DWARF Error: DW_FORM_line_strp used without required section.
2. The same executable is generally OK under lldb, as well as the case of using other debug options with clang.
3. Weird still, using -gdwarf-3 or -gdwarf-4 with clang results in an executable usable in gdb, though using -g will cause an error message in gdb like: DW_FORM_GNU_str_index or DW_FORM_strx used without .debug_str section in CU at offset 0x0.

So the original purpose of using gdb with gcc no longer works....

Any clues?

[gromgit]

This was reported upstream 5 months ago, with no progress as of this writing: https://sourceware.org/bugzilla/show_bug.cgi?id=32235

You might want to take a look at that bug report and see if you can contribute any other insights.