fix(geomodel): also hide std::__format vtables/typeinfo from exports

[olantwin]

Summary

• Broadens the linker version script from _ZNSt8__format* (functions only) to *NSt8__format* (functions + vtables + typeinfo + typeinfo names + any future std::__format mangling).
• Bumps recipes/geomodel/recipe.yaml build.number to 4.

Why

PR #17 (_3) hid _ZN…-mangled std::__format functions and the local symbol audit went 4 → 0 weak _ZN exports per geomodel library. But ShipSoft/Geometry's PR #26 CI still crashes. PR #29 added a gdb --batch step to the failing workflow and captured this backtrace from run 27018773426:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7f90843 in std::__format::_Sink<char>::_M_write(...)
                    from /…/.pixi/envs/default/lib/libGeoModelWrite.so.6
#0  std::__format::_Sink<char>::_M_write(...)              from libGeoModelWrite.so.6
#1  std::__format::_Formatting_scanner<...>::_M_on_chars(...) from libGeoModelWrite.so.6
#2  std::__format::_Scanner<char>::_M_scan(this=0x7fffffffa2c0) at .../format:3942
#3  std::__format::__do_vformat_to<...>                    at .../format:4191
#4  std::vformat_to<std::__format::_Sink_iter<char>>(...)  at .../format:4221
#5  std::vformat[abi:cxx11](...)                           at .../format:4256
#6  std::format<int&, int&>(__fmt=…)                       at .../format:3764
#7  SHiPGeometry::CalorimeterFactory::buildStack(…)        at CalorimeterFactory.cpp:184

Why round 3 didn't fix it: nm -D libGeoModelWrite.so.6 | grep __format on the rebuilt _3 artifact still shows 15 V (vague-linkage) entries:

V _ZTINSt8__format5_SinkIcEE                                  typeinfo for _Sink<char>
V _ZTVNSt8__format14_Fixedbuf_sinkIcEE                        vtable for _Fixedbuf_sink<char>
V _ZTVNSt8__format9_Seq_sinkINSt7__cxx1112basic_string…       vtable for _Seq_sink<string>
V _ZTVNSt8__format19_Formatting_scannerINS_10_Sink_iterIcEEcEE  vtable for _Formatting_scanner
V _ZTSNSt8__format…                                            (6× typeinfo names)
V _ZTI…                                                        (6× typeinfo)

The _ZNSt8__format* glob doesn't match those — they start with _ZTV/_ZTI/_ZTS, not _ZN. So build_geometry's stack-allocated _Seq_sink<std::string> constructor still binds its vptr to libGeoModelWrite's exported vtable (libGeoModelWrite is first in DT_NEEDED), the virtual call dispatches into libGeoModelWrite's compiled-with-different-headers _M_write, and the class layout mismatch crashes.

*NSt8__format* matches the mangled namespace prefix wherever it appears in the symbol — functions (_ZN…NSt8__format…), vtables (_ZTVNSt8__format…), typeinfo (_ZTINSt8__format…), typeinfo names (_ZTSNSt8__format…). Each consumer .so keeps its own internally-emitted copies, ABI-consistent with the headers it was compiled against, and no cross-library vptr resolution happens.

Test plan

• CI build job succeeds for the geomodel/shipgeometry/shipgeometryservice/aegir tier
• After merge, post-merge run uploads geomodel 6.27.0 hb0f4dca_4 to channel ship
• Local audit reports 0 V|W St8__format exports per libGeoModelXml/Write/Read/DBManager.so.6 (round 3 had 0 W but 15 V; round 4 must zero both)
• PR build: rebuild geant4-dependent recipes against geant4 11.4 #26's GitHub Actions run goes green; the if: failure() gdb step from PR ci: add weekly channel snapshot workflow #29 doesn't fire

Summary by CodeRabbit

• Chores
  • Updated build recipe and configuration for the geomodel package.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 3773027c-6f00-48f0-abf6-c2721416147a

📥 Commits

Reviewing files that changed from the base of the PR and between 5cc699a and 6a1481b.

📒 Files selected for processing (2)

• recipes/geomodel/build.sh
• recipes/geomodel/recipe.yaml

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📝 Walkthrough

Walkthrough

The PR refines the geomodel recipe's linker version script to hide std::__format symbols using a more inclusive pattern matching strategy, and bumps the build metadata to version 4 to reflect this change.

Changes

Geomodel symbol hiding and build metadata

Layer / File(s)	Summary
Linker version script and build metadata update recipes/geomodel/build.sh, recipes/geomodel/recipe.yaml	The hide-std-format.ver generation updates its local: pattern from _ZNSt8__format* to *NSt8__format* to cover all std::__format mangling variants (functions, vtables, typeinfo/name symbols), with expanded inline documentation. The recipe build number is incremented from 3 to 4.

Possibly related PRs

• ShipSoft/ship-conda-recipes#17: Both PRs modify recipes/geomodel/build.sh to generate/pass the hide-std-format.ver linker version script and both bump recipes/geomodel/recipe.yaml build metadata.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: broadening the linker version script pattern to hide std::__format vtables and typeinfo symbols in addition to functions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/geomodel-hide-format-typeinfo

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