[all-commits] [llvm/llvm-project] cebc4a: [Lex][Clang] Add checking to HeaderMapImpl::getStr...

[Shafik Yaghmour via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cebc4a167c518d83bb95fddd1c0dd6eebed3d505
      https://github.com/llvm/llvm-project/commit/cebc4a167c518d83bb95fddd1c0dd6eebed3d505
  Author: Shafik Yaghmour <shafik.yaghmour at intel.com>
  Date:   2025-03-20 (Thu, 20 Mar 2025)

  Changed paths:
    M clang/lib/Lex/HeaderMap.cpp

  Log Message:
  -----------
  [Lex][Clang] Add checking to HeaderMapImpl::getString to make it more robust (#131677)

Static analysis identified the Len - 1 expression in
HeaderMapImpl::getString as problematic if Len is zero. After filing
this issue:

https://github.com/llvm/llvm-project/issues/130185

Indeed we should be checking MaxLen and verify it is not zero as well.

Fixes: https://github.com/llvm/llvm-project/issues/130185



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