[all-commits] [llvm/llvm-project] a2f979: [Clang] Prevent null pointer dereference in Sema::...

[smanna12 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a2f97974e670379b28f7ad4701233fc162a46867
      https://github.com/llvm/llvm-project/commit/a2f97974e670379b28f7ad4701233fc162a46867
  Author: smanna12 <soumi.manna at intel.com>
  Date:   2024-05-02 (Thu, 02 May 2024)

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

  Log Message:
  -----------
  [Clang] Prevent null pointer dereference in Sema::​CodeCompleteQualifiedId() (#90490)

The null pointer dereference issue seems happening with in the
expression NNS->getAsType().

Although dyn_cast_or_null<TemplateTypeParmType>() correctly handles null
pointers, it doesn’t prevent the subsequent dereferencing operation.

The fix ensures that NNS pointer is not null before calling the
getAsType() method, thus preventing potential runtime errors caused by
attempting to access a null pointer.



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