[PWGCF] create a minimum container for di-hadron correlations

[Luzhiyongg]

No description provided.

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 18 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 2315f8e at 2026-07-09 10:13:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 17 errors and 0 warnings.'
Found 17 errors and 0 warnings.
++ [[ 17 -gt 0 ]]
++ cat /sw/BUILD/c484be341345d2ead273fe13a1159aa4cae0d653/O2Physics-code-check/errors.txt
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:19:1: error: included header MathConstants.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:24:1: error: included header TCanvas.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:26:1: error: included header TF1.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:30:1: error: included header TMath.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:31:1: error: included header TMathBase.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:48:1: error: constructor does not initialize these fields: nCorrStep [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:48:42: error: initializer for base class 'TNamed' is redundant [readability-redundant-member-init,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:57:44: error: no header providing "uint8_t" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:66:40: error: local copy 'pairAxis' of the variable 'correlationAxis' is never modified; consider avoiding the copy [performance-unnecessary-copy-initialization,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:69:8: error: no header providing "uint" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:112:3: error: use auto when initializing with a cast to avoid duplicating the type name [modernize-use-auto,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:112:31: error: do not use C-style cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-cstyle-cast,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:157:3: error: use auto when initializing with new to avoid duplicating the type name [modernize-use-auto,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:166:5: error: use auto when initializing with a cast to avoid duplicating the type name [modernize-use-auto,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.h:46:9: error: function 'DihadronContainer::DihadronContainer' has a definition with different parameter names [readability-inconsistent-declaration-parameter-name,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.h:46:127: error: no header providing "uint8_t" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.h:47:17: error: prefer using 'override' or (rarely) 'final' instead of 'virtual' [modernize-use-override,-warnings-as-errors]
++ [[ 0 -gt 0 ]]
++ [[ 17 -gt 0 ]]
++ exit 1
--

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for cab2313 at 2026-07-09 10:22:

++ set -euo pipefail
++ [[ -d /sw/slc9_x86-64/Clang/v20.1.7-20 ]]
+++ realpath /sw/BUILD/0f4b764d3334cf443a65dc1ed00641936b9b1d97/O2Physics-code-check/../../O2Physics-latest/O2Physics
++ O2PHYSICS_BUILDDIR=/sw/BUILD/4ebcec2ee56667a72cd9c1c0dafa8b7f62963204/O2Physics
++ cp /sw/BUILD/4ebcec2ee56667a72cd9c1c0dafa8b7f62963204/O2Physics/compile_commands.json .
+++ python3 -c 'import json, os; print(os.path.commonpath([x["file"] for x in json.loads(open("compile_commands.json").read()) if "sw/BUILD" not in x["file"] and "G__" not in x["file"] and x["file"].endswith(".cxx")]))'
++ O2PHYSICS_SRC=/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0
++ pushd /sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0
/sw/SPECS/slc9_x86-64/O2Physics-code-check/1.0-local84/O2Physics-code-check.sh: line 16: pushd: /sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0: No such file or directory

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for 25d64f0 at 2026-07-09 11:08:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 5 errors and 0 warnings.'
Found 5 errors and 0 warnings.
++ [[ 5 -gt 0 ]]
++ cat /sw/BUILD/41ab110601eb49cf3fda138e7d65fd7cfe5c8790/O2Physics-code-check/errors.txt
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:61:8: error: no header providing "uint" is directly included [misc-include-cleaner,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:76:3: error: Call to virtual method 'DihadronContainer::Copy' during construction bypasses virtual dispatch [clang-analyzer-optin.cplusplus.VirtualCall,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:76:3: error: redundant explicit casting to the same type 'const DihadronContainer' as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.cxx:94:5: error: redundant explicit casting to the same type 'const DihadronContainer' as the sub-expression, remove this casting [readability-redundant-casting,-warnings-as-errors]
PWGCF/TwoParticleCorrelations/Core/DihadronContainer.h:48:11: error: prefer using 'override' or (rarely) 'final' instead of 'virtual' [modernize-use-override,-warnings-as-errors]
++ [[ 0 -gt 0 ]]
++ [[ 5 -gt 0 ]]
++ exit 1
--

Full log here.