Remove the following unused code from the CoreCLR utilcode:

1. ClrVirtualAllocAligned

• Declaration: src/coreclr/inc/utilcode.h line 521

  LPVOID ClrVirtualAllocAligned(LPVOID lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect, SIZE_T alignment);

• Definition: src/coreclr/utilcode/util.cpp lines 347-372
  • This function has no callers anywhere in the codebase
  • Also remove the associated UNIXTODO comment within the function body (line 366: // UNIXTODO: Add a specialized function to PAL so that we don't have to waste memory)

2. ConfigString class

• Declaration: src/coreclr/inc/utilcode.h lines 2775-2805

  /**************************************************************************/
  class ConfigString
  {
  public:
      inline LPWSTR val(const CLRConfig::ConfigStringInfo & info)
      ...
  private:
      void init(const CLRConfig::ConfigStringInfo & info);
  private:
      LPWSTR m_value;
      BYTE m_inited;
  };

• Implementation: src/coreclr/utilcode/util.cpp lines 1200-1215

  /**************************************************************************/
  void ConfigString::init(const CLRConfig::ConfigStringInfo & info)
  ...

• This class is never instantiated anywhere in the codebase

3. ConfigMethodSet class

• Declaration: src/coreclr/inc/utilcode.h lines 2807-2837

  /**************************************************************************/
  class ConfigMethodSet
  {
  public:
      bool isEmpty()
      ...
      bool contains(LPCUTF8 methodName, LPCUTF8 className, int argCount = -1);
      bool contains(LPCUTF8 methodName, LPCUTF8 className, CORINFO_SIG_INFO* pSigInfo);
      inline void ensureInit(const CLRConfig::ConfigStringInfo & info)
      ...
  private:
      void init(const CLRConfig::ConfigStringInfo & info);
  private:
      MethodNamesListBase m_list;
      BYTE m_inited;
  };

• Implementation: src/coreclr/utilcode/util.cpp lines 1145-1198

  /**************************************************************************/
  void ConfigMethodSet::init(const CLRConfig::ConfigStringInfo & info)
  ...
  bool ConfigMethodSet::contains(LPCUTF8 methodName, LPCUTF8 className, int argCount)
  ...
  bool ConfigMethodSet::contains(LPCUTF8 methodName, LPCUTF8 className, CORINFO_SIG_INFO* pSigInfo)
  ...

• This class is never used anywhere in the codebase

Important Note

DO NOT delete ConfigDWORD - this class IS actively used in many places throughout the runtime (rejit.inl, debug.cpp, gccover.cpp, ceemain.cpp, threadsuspend.cpp, shimprocess.cpp, pedecoder.cpp, codeman.cpp, etc.)

Files to modify:

1. src/coreclr/inc/utilcode.h - Remove declaration of ClrVirtualAllocAligned, and remove the ConfigString and ConfigMethodSet class declarations
2. src/coreclr/utilcode/util.cpp - Remove the ClrVirtualAllocAligned function definition (including the UNIXTODO comment), and remove the ConfigString::init and all ConfigMethodSet method implementations