2 files changed, 45 insertions, 10 deletions

diff --git a/indra/llprimitive/llmaterialid.cpp b/indra/llprimitive/llmaterialid.cpp
index bbbbf0ced3..590f5cd91f 100644
--- a/indra/llprimitive/llmaterialid.cpp
+++ b/indra/llprimitive/llmaterialid.cpp
@@ -29,6 +29,10 @@
 
 #include "llmaterialid.h"
 
+#include <string>
+
+#include "llformat.h"
+
 const LLMaterialID LLMaterialID::null;
 
 LLMaterialID::LLMaterialID()
@@ -71,15 +75,30 @@ bool LLMaterialID::operator != (const LLMaterialID& pOtherMaterialID) const
 	return (compareToOtherMaterialID(pOtherMaterialID) != 0);
 }
 
-LLMaterialID& LLMaterialID::operator = (const LLMaterialID& pOtherMaterialID)
+bool LLMaterialID::operator < (const LLMaterialID& pOtherMaterialID) const
 {
-	copyFromOtherMaterialID(pOtherMaterialID);
-	return (*this);
+	return (compareToOtherMaterialID(pOtherMaterialID) < 0);
 }
 
-bool LLMaterialID::operator < (const LLMaterialID& pOtherMaterialID) const
+bool LLMaterialID::operator <= (const LLMaterialID& pOtherMaterialID) const
 {
-	return (compareToOtherMaterialID(pOtherMaterialID) < 0);
+	return (compareToOtherMaterialID(pOtherMaterialID) <= 0);
+}
+
+bool LLMaterialID::operator > (const LLMaterialID& pOtherMaterialID) const
+{
+	return (compareToOtherMaterialID(pOtherMaterialID) > 0);
+}
+
+bool LLMaterialID::operator >= (const LLMaterialID& pOtherMaterialID) const
+{
+	return (compareToOtherMaterialID(pOtherMaterialID) >= 0);
+}
+
+LLMaterialID& LLMaterialID::operator = (const LLMaterialID& pOtherMaterialID)
+{
+	copyFromOtherMaterialID(pOtherMaterialID);
+	return (*this);
 }
 
 bool LLMaterialID::isNull() const
@@ -119,13 +138,13 @@ LLSD LLMaterialID::asLLSD() const
 std::string LLMaterialID::asString() const
 {
 	std::string materialIDString;
-	for (unsigned int i = 0U; i < 4; ++i)
+	for (unsigned int i = 0U; i < static_cast<unsigned int>(MATERIAL_ID_SIZE / sizeof(U32)); ++i)
 	{
 		if (i != 0U)
 		{
 			materialIDString += "-";
 		}
-		const U32 *value = reinterpret_cast<const U32*>(&mID[i * 4]);
+		const U32 *value = reinterpret_cast<const U32*>(&get()[i * sizeof(U32)]);
 		materialIDString += llformat("%08x", *value);
 	}
 	return materialIDString;
@@ -139,10 +158,19 @@ void LLMaterialID::parseFromBinary (const LLSD::Binary& pMaterialID)
 
 void LLMaterialID::copyFromOtherMaterialID(const LLMaterialID& pOtherMaterialID)
 {
-	memcpy(mID, pOtherMaterialID.mID, MATERIAL_ID_SIZE * sizeof(U8));
+	memcpy(mID, pOtherMaterialID.get(), MATERIAL_ID_SIZE * sizeof(U8));
 }
 
 int LLMaterialID::compareToOtherMaterialID(const LLMaterialID& pOtherMaterialID) const
 {
-	return memcmp(mID, pOtherMaterialID.mID, MATERIAL_ID_SIZE * sizeof(U8));
+	int retVal = 0;
+
+	for (unsigned int i = 0U; (retVal == 0) && (i < static_cast<unsigned int>(MATERIAL_ID_SIZE / sizeof(U32))); ++i)
+	{
+		const U32 *thisValue = reinterpret_cast<const U32*>(&get()[i * sizeof(U32)]);
+		const U32 *otherValue = reinterpret_cast<const U32*>(&pOtherMaterialID.get()[i * sizeof(U32)]);
+		retVal = ((*thisValue < *otherValue) ? -1 : ((*thisValue > *otherValue) ? 1 : 0));
+	}
+
+	return retVal;
 }
diff --git a/indra/llprimitive/llmaterialid.h b/indra/llprimitive/llmaterialid.h
index ffefc9f11c..9db4065302 100644
--- a/indra/llprimitive/llmaterialid.h
+++ b/indra/llprimitive/llmaterialid.h
@@ -29,6 +29,8 @@
 
 #define MATERIAL_ID_SIZE 16
 
+#include <string>
+
 class LLMaterialID
 {
 public:
@@ -41,8 +43,13 @@ public:
 
 	bool          operator == (const LLMaterialID& pOtherMaterialID) const;
 	bool          operator != (const LLMaterialID& pOtherMaterialID) const;
-	LLMaterialID& operator = (const LLMaterialID& pOtherMaterialID);
+
 	bool          operator < (const LLMaterialID& pOtherMaterialID) const;
+	bool          operator <= (const LLMaterialID& pOtherMaterialID) const;
+	bool          operator > (const LLMaterialID& pOtherMaterialID) const;
+	bool          operator >= (const LLMaterialID& pOtherMaterialID) const;
+
+	LLMaterialID& operator = (const LLMaterialID& pOtherMaterialID);
 
 	bool          isNull() const;