[all-commits] [llvm/llvm-project] 08bda1: Reland: [clang] fix P3310 overload resolution flag...

[Matheus Izvekov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 08bda1cc6b0d2f1d31a89a76b5c154a11086c420
      https://github.com/llvm/llvm-project/commit/08bda1cc6b0d2f1d31a89a76b5c154a11086c420
  Author: Matheus Izvekov <mizvekov at gmail.com>
  Date:   2025-02-05 (Wed, 05 Feb 2025)

  Changed paths:
    M clang/include/clang/AST/DeclTemplate.h
    M clang/include/clang/Sema/Sema.h
    M clang/lib/AST/ASTImporter.cpp
    M clang/lib/AST/DeclTemplate.cpp
    M clang/lib/AST/JSONNodeDumper.cpp
    M clang/lib/AST/TextNodeDumper.cpp
    M clang/lib/Sema/SemaTemplate.cpp
    M clang/lib/Sema/SemaTemplateDeduction.cpp
    M clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
    M clang/lib/Sema/SemaType.cpp
    M clang/lib/Serialization/ASTReaderDecl.cpp
    M clang/lib/Serialization/ASTWriterDecl.cpp
    M clang/test/AST/ast-dump-templates.cpp
    M clang/test/AST/gen_ast_dump_json_test.py
    M clang/test/SemaTemplate/cwg2398.cpp
    M lldb/source/Plugins/ExpressionParser/Clang/CxxModuleHandler.cpp

  Log Message:
  -----------
  Reland: [clang] fix P3310 overload resolution flag propagation (#125791)

Class templates might be only instantiated when they are required to be
complete, but checking the template args against the primary template is
immediate.

This result is cached so that later when the class is instantiated,
checking against the primary template is not repeated.

The 'MatchedPackOnParmToNonPackOnArg' flag is also produced upon
checking against the primary template, so it needs to be cached in the
specialziation as well.

This fixes a bug which has not been in any release, so there are no
release notes.

Fixes #125290



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