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Re-add separateDebugInfo = true; once the GDB bugfix is rolled out everywhere #1003

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opened 2025-10-04 13:48:05 +00:00 by ma27 · 4 comments
ma27 commented 2025-10-04 13:48:05 +00:00
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Describe the bug

Not a real bug, but I figured having an issue for documentation purposes is still sensible.

In https://gerrit.lix.systems/c/lix/+/3880 we had to turn off separateDebugInfo = true; since this resulted in the debug script not being loaded.

The reason is that the hook for separateDebugInfo=true; also turns on compression for these sections, but the code-path in GDB for loading user scripts regressed on loading compressed scripts recently.

I filed a patch for binutils-gdb: https://sourceware.org/pipermail/gdb-patches/2025-October/221398.html

Once it's available for nixpkgs, we should turn separateDebugInfo for Linux back on.

Additional context

Add any other context about the problem here.

## Describe the bug Not a real bug, but I figured having an issue for documentation purposes is still sensible. In https://gerrit.lix.systems/c/lix/+/3880 we had to turn off `separateDebugInfo = true;` since this resulted in the debug script not being loaded. The reason is that the hook for `separateDebugInfo=true;` also turns on compression for these sections, but the code-path in GDB for loading user scripts regressed on loading compressed scripts recently. I filed a patch for binutils-gdb: https://sourceware.org/pipermail/gdb-patches/2025-October/221398.html Once it's available for nixpkgs, we should turn `separateDebugInfo` for Linux back on. ## Additional context Add any other context about the problem here.
ma27 self-assigned this 2025-10-04 13:48:05 +00:00
commentatorforall commented 2026-01-04 13:00:07 +00:00
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has the upstream bug been fixed yet?

has the upstream bug been fixed yet?
raito commented 2026-01-04 13:00:22 +00:00
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Yes, but it's not released yet. They missed pulling our commit for the last gdb release for no apparent reason.

Yes, but it's not released yet. They missed pulling our commit for the last gdb release for no apparent reason.
ma27 commented 2026-01-06 22:48:49 +00:00
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fwiw, I'm keeping an eye on upstream releases currently (also because I'm awaiting the test-case they sniped me into writing to be merged :D)

fwiw, I'm keeping an eye on upstream releases currently (also because I'm awaiting the test-case they sniped me into writing to be merged :D)
ma27 commented 2026-01-07 20:20:54 +00:00
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The patch got now backported to the 17.x branch, so it will be part of gdb 17.2: https://sourceware.org/bugzilla/show_bug.cgi?id=33768, https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0926b8b8339ce5aacd564dd319a284375e4861db

The patch got now backported to the 17.x branch, so it will be part of gdb 17.2: https://sourceware.org/bugzilla/show_bug.cgi?id=33768, https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0926b8b8339ce5aacd564dd319a284375e4861db
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