From 4c56ee5bc8bfe00793abb7d40eb3f6fb040f10d2 Mon Sep 17 00:00:00 2001
From: Nicholas Hastings <nshastings@gmail.com>
Date: Mon, 27 Apr 2026 01:43:12 +0000
Subject: [PATCH] Compatibility fixes for Clang 22

---
 public/bitvec.h               | 6 +++---
 public/sentence.cpp           | 2 +-
 public/sentence.h             | 2 +-
 public/studio.h               | 4 ++--
 public/tier0/platform.h       | 2 +-
 public/tier1/utlblockmemory.h | 5 +++--
 6 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/public/bitvec.h b/public/bitvec.h
index fe2414aa..c6471cdb 100644
--- a/public/bitvec.h
+++ b/public/bitvec.h
@@ -448,7 +448,7 @@ typedef CBitVec<32> CDWordBitVec;
 template <typename BITCOUNTTYPE>
 inline CVarBitVecBase<BITCOUNTTYPE>::CVarBitVecBase()
 {
-	Plat_FastMemset( this, 0, sizeof( *this ) );
+	Plat_FastMemset( (void *)this, 0, sizeof( *this ) );
 }
 
 //-----------------------------------------------------------------------------
@@ -479,7 +479,7 @@ inline CVarBitVecBase<BITCOUNTTYPE>::CVarBitVecBase( const CVarBitVecBase<BITCOU
 		memcpy( m_pInt, from.m_pInt, m_numInts * sizeof(int) );
 	}
 	else
-		memset( this, 0, sizeof( *this ) );
+		memset( (void *)this, 0, sizeof( *this ) );
 }
 
 //-----------------------------------------------------------------------------
@@ -547,7 +547,7 @@ inline bool CVarBitVecBase<BITCOUNTTYPE>::Detach( uint32 **ppBits, int *pNumBits
 		free( m_pInt );
 	}
 
-	memset( this, 0, sizeof( *this ) );
+	memset( (void *)this, 0, sizeof( *this ) );
 	return true;
 }
 
diff --git a/public/sentence.cpp b/public/sentence.cpp
index b2c1af4b..37062054 100644
--- a/public/sentence.cpp
+++ b/public/sentence.cpp
@@ -240,7 +240,7 @@ CBasePhonemeTag::CBasePhonemeTag()
 
 CBasePhonemeTag::CBasePhonemeTag( const CBasePhonemeTag& from )
 {
-	memcpy( this, &from, sizeof(*this) );
+	memcpy( (void *)this, &from, sizeof(*this) );
 }
 
 
diff --git a/public/sentence.h b/public/sentence.h
index ee547948..478d1152 100644
--- a/public/sentence.h
+++ b/public/sentence.h
@@ -48,7 +48,7 @@ public:
 	CBasePhonemeTag();
 	CBasePhonemeTag( const CBasePhonemeTag& from );
 
-	CBasePhonemeTag &operator=( const CBasePhonemeTag &from )	{ memcpy( this, &from, sizeof(*this) ); return *this; }
+	CBasePhonemeTag &operator=( const CBasePhonemeTag &from )	{ memcpy( (void *)this, &from, sizeof(*this) ); return *this; }
 
 	float GetStartTime() const				{ return m_flStartTime; }
 	void SetStartTime( float startTime )	{ m_flStartTime = startTime; }
diff --git a/public/studio.h b/public/studio.h
index ced6bec6..cc56accf 100644
--- a/public/studio.h
+++ b/public/studio.h
@@ -3207,7 +3207,7 @@ inline int Studio_LoadVertexes( const vertexFileHeader_t *pTempVvdHdr, vertexFil
 
 		// copy vertexes
 		memcpy(
-			(mstudiovertex_t *)((byte *)pNewVvdHdr+pNewVvdHdr->vertexDataStart) + target,
+			(void *)((mstudiovertex_t *)((byte *)pNewVvdHdr+pNewVvdHdr->vertexDataStart) + target),
 			(mstudiovertex_t *)((byte *)pTempVvdHdr+pTempVvdHdr->vertexDataStart) + pFixupTable[i].sourceVertexID,
 			pFixupTable[i].numVertexes*sizeof(mstudiovertex_t) );
 
@@ -3215,7 +3215,7 @@ inline int Studio_LoadVertexes( const vertexFileHeader_t *pTempVvdHdr, vertexFil
 		{
 			// copy tangents
 			memcpy(
-				(Vector4D *)((byte *)pNewVvdHdr+pNewVvdHdr->tangentDataStart) + target,
+				(void *)((Vector4D *)((byte *)pNewVvdHdr+pNewVvdHdr->tangentDataStart) + target),
 				(Vector4D *)((byte *)pTempVvdHdr+pTempVvdHdr->tangentDataStart) + pFixupTable[i].sourceVertexID,
 				pFixupTable[i].numVertexes*sizeof(Vector4D) );
 		}
diff --git a/public/tier0/platform.h b/public/tier0/platform.h
index ec0029ef..45f2b737 100644
--- a/public/tier0/platform.h
+++ b/public/tier0/platform.h
@@ -1186,7 +1186,7 @@ inline uint64 Plat_Rdtsc()
 	public:												\
 		_classname &operator=( const _classname &src )	\
 		{												\
-			memcpy( this, &src, sizeof(_classname) );	\
+			memcpy( (void *)this, &src, sizeof(_classname) );	\
 			return *this;								\
 		}
 
diff --git a/public/tier1/utlblockmemory.h b/public/tier1/utlblockmemory.h
index 9498f720..6e7b1e44 100644
--- a/public/tier1/utlblockmemory.h
+++ b/public/tier1/utlblockmemory.h
@@ -139,8 +139,9 @@ void CUtlBlockMemory<T,I>::Swap( CUtlBlockMemory< T, I > &mem )
 {
 	V_swap( m_pMemory, mem.m_pMemory );
 	V_swap( m_nBlocks, mem.m_nBlocks );
-	V_swap( m_nIndexMask, mem.m_nIndexMask );
-	V_swap( m_nIndexShift, mem.m_nIndexShift );
+	// Bit-fields cannot bind to non-const references; swap manually.
+	int nIndexMask = m_nIndexMask; m_nIndexMask = mem.m_nIndexMask; mem.m_nIndexMask = nIndexMask;
+	int nIndexShift = m_nIndexShift; m_nIndexShift = mem.m_nIndexShift; mem.m_nIndexShift = nIndexShift;
 }