[all-commits] [llvm/llvm-project] 0162df: [Clang] Fix null pointer dereference in VisitUsing...

[smanna12 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0162df03cd51e5207310424f2a83b7670c3c2ade
      https://github.com/llvm/llvm-project/commit/0162df03cd51e5207310424f2a83b7670c3c2ade
  Author: smanna12 <soumi.manna at intel.com>
  Date:   2024-07-10 (Wed, 10 Jul 2024)

  Changed paths:
    M clang/lib/Sema/SemaTemplateInstantiateDecl.cpp

  Log Message:
  -----------
  [Clang] Fix null pointer dereference in VisitUsingEnumDecl (#97910)

This patch addresses static analyzer concern where TSI could be
dereferenced after being assigned a null value from SubstType in
clang::TemplateDeclInstantiator::VisitUsingEnumDecl(clang::UsingEnumDecl
*).

The fix now checks null value of TSI after the call to SubstType and
return nullptr to prevent potential null pointer dereferences when
calling UsingEnumDecl::Create() and ensures safe execution.



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