diff --git a/source/blood/src/globals.cpp b/source/blood/src/globals.cpp
index a9d70643a..bbfd71188 100644
--- a/source/blood/src/globals.cpp
+++ b/source/blood/src/globals.cpp
@@ -62,7 +62,6 @@ void _consoleSysMsg(const char* pzFormat, ...) {
     va_list args;
     va_start(args, pzFormat);
     vsprintf(buffer, pzFormat, args);
-    initprintf("%s(%i): %s\n", _module, _line, buffer);
 
     OSD_Printf(OSDTEXT_RED "%s(%i): %s\n", _module, _line, buffer);
 }
diff --git a/source/common/filesystem/filesystem.cpp b/source/common/filesystem/filesystem.cpp
index 1a508f6d4..86c819f48 100644
--- a/source/common/filesystem/filesystem.cpp
+++ b/source/common/filesystem/filesystem.cpp
@@ -482,7 +482,7 @@ int FileSystem::Iterate (const char *name, int *lastlump, ELookupMode lookupmode
 	}
 
 	lump_p = &FileInfo[*lastlump];
-	while (lump_p < &FileInfo[NumEntries])
+	while (lump_p <= &FileInfo.Last())
 	{
 		auto lump = lump_p->lump;
 		if (lump->LumpName[lookupindex] == lname)
diff --git a/source/common/searchpaths.cpp b/source/common/searchpaths.cpp
index e7cc03255..d7ae77a58 100644
--- a/source/common/searchpaths.cpp
+++ b/source/common/searchpaths.cpp
@@ -1016,7 +1016,7 @@ TArray<GrpEntry> GrpScan()
 
 	for (unsigned i = 0; i < foundGames.Size(); i++)
 	{
-		for (unsigned j = foundGames.Size(); j > i; j--)
+		for (unsigned j = foundGames.Size() - 1; j > i; j--)
 		{
 			if (foundGames[i].FileInfo.CRC == foundGames[j].FileInfo.CRC)
 				foundGames.Delete(j);
diff --git a/source/common/utility/m_argv.h b/source/common/utility/m_argv.h
index 2e822dee7..8684b1fd1 100644
--- a/source/common/utility/m_argv.h
+++ b/source/common/utility/m_argv.h
@@ -50,28 +50,28 @@ public:
 
 	iterator begin()
 	{
-		return &Argv[0];
+		return Argv.begin();
 	}
 	const_iterator begin() const
 	{
-		return &Argv[0];
+		return Argv.begin();
 	}
 	const_iterator cbegin() const
 	{
-		return &Argv[0];
+		return Argv.begin();
 	}
 
 	iterator end()
 	{
-		return &Argv[Argv.Size()];
+		return Argv.end();
 	}
 	const_iterator end() const
 	{
-		return &Argv[Argv.Size()];
+		return Argv.end();
 	}
 	const_iterator cend() const
 	{
-		return &Argv[Argv.Size()];
+		return Argv.end();
 	}
 
 	FArgs();
diff --git a/source/common/utility/tarray.h b/source/common/utility/tarray.h
index 77265ece8..2be5f882a 100644
--- a/source/common/utility/tarray.h
+++ b/source/common/utility/tarray.h
@@ -237,14 +237,17 @@ public:
 		}
 		return true;
 	}
-	// Return a reference to an element
+	// Return a reference to an element.
+	// Note that the asserts must let the element after the end pass because this gets frequently used as a sentinel pointer.
 	T &operator[] (size_t index) const
 	{
+		assert(index <= Count);
 		return Array[index];
 	}
 	// Returns the value of an element
 	TT operator() (size_t index) const
 	{
+		assert(index <= Count);
 		return Array[index];
 	}
 	// Returns a reference to the last element