diff --git a/repl/repl_main.c b/repl/repl_main.c
index 6a7a85e..dc8d002 100644
--- a/repl/repl_main.c
+++ b/repl/repl_main.c
@@ -75,7 +75,7 @@ void repl(const char* initialInput) {
 
 		if (!error) {
 			//get the bytecode dump
-			int size = 0;
+			size_t size = 0;
 			unsigned char* tb = Toy_collateCompiler(&compiler, &size);
 
 			//run the bytecode
diff --git a/repl/repl_tools.c b/repl/repl_tools.c
index 141ba4d..2d13715 100644
--- a/repl/repl_tools.c
+++ b/repl/repl_tools.c
@@ -94,7 +94,7 @@ const unsigned char* Toy_compileString(const char* source, size_t* size) {
 	}
 
 	//get the bytecode dump
-	const unsigned char* tb = Toy_collateCompiler(&compiler, (int*)(size));
+	const unsigned char* tb = Toy_collateCompiler(&compiler, size);
 
 	//cleanup
 	Toy_freeCompiler(&compiler);
diff --git a/source/toy_common.h b/source/toy_common.h
index 52afdf1..9eb3d7b 100644
--- a/source/toy_common.h
+++ b/source/toy_common.h
@@ -43,6 +43,7 @@ typedef struct {
 	bool verbose;
 } Toy_CommandLine;
 
+//these are intended for the repl only, despite using the api prefix
 TOY_API Toy_CommandLine Toy_commandLine;
 
 TOY_API void Toy_initCommandLine(int argc, const char* argv[]);
diff --git a/source/toy_compiler.c b/source/toy_compiler.c
index 804ba36..dcdaef3 100644
--- a/source/toy_compiler.c
+++ b/source/toy_compiler.c
@@ -981,6 +981,8 @@ void Toy_writeCompiler(Toy_Compiler* compiler, Toy_ASTNode* node) {
 	if (op != TOY_OP_EOF) {//compensate for indexing & dot notation being screwy
 		compiler->bytecode[compiler->count++] = (unsigned char)op; //1 byte
 	}
+
+	//TODO: could free up AST Nodes
 }
 
 void Toy_freeCompiler(Toy_Compiler* compiler) {
@@ -989,6 +991,7 @@ void Toy_freeCompiler(Toy_Compiler* compiler) {
 	compiler->bytecode = NULL;
 	compiler->capacity = 0;
 	compiler->count = 0;
+	compiler->panic = false;
 }
 
 static void emitByte(unsigned char** collationPtr, int* capacityPtr, int* countPtr, unsigned char byte) {
@@ -1036,7 +1039,7 @@ static void emitFloat(unsigned char** collationPtr, int* capacityPtr, int* count
 }
 
 //return the result
-static unsigned char* collateCompilerHeaderOpt(Toy_Compiler* compiler, int* size, bool embedHeader) {
+static unsigned char* collateCompilerHeaderOpt(Toy_Compiler* compiler, size_t* size, bool embedHeader) {
 	if (compiler->panic) {
 		fprintf(stderr, TOY_CC_ERROR "[internal] Can't collate a panicked compiler\n" TOY_CC_RESET);
 		return NULL;
@@ -1181,14 +1184,14 @@ static unsigned char* collateCompilerHeaderOpt(Toy_Compiler* compiler, int* size
 				void* fnCompiler = TOY_AS_FUNCTION(fn).inner.bytecode; //store the compiler here for now
 
 				//collate the function into bytecode (without header)
-				int size = 0;
+				size_t size = 0;
 				unsigned char* bytes = collateCompilerHeaderOpt((Toy_Compiler*)fnCompiler, &size, false);
 
 				//emit how long this section is, +1 for ending mark
 				Toy_emitShort(&fnCollation, &fnCapacity, &fnCount, (unsigned short)size + 1);
 
 				//write the fn to the fn collation
-				for (int i = 0; i < size; i++) {
+				for (size_t i = 0; i < size; i++) {
 					emitByte(&fnCollation, &fnCapacity, &fnCount, bytes[i]);
 				}
 
@@ -1296,6 +1299,6 @@ static unsigned char* collateCompilerHeaderOpt(Toy_Compiler* compiler, int* size
 }
 
 //the whole point of the compiler is to alter bytecode, so leave it as non-const
-unsigned char* Toy_collateCompiler(Toy_Compiler* compiler, int* size) {
+unsigned char* Toy_collateCompiler(Toy_Compiler* compiler, size_t* size) {
 	return collateCompilerHeaderOpt(compiler, size, true);
 }
diff --git a/source/toy_compiler.h b/source/toy_compiler.h
index 08b8d44..58f986c 100644
--- a/source/toy_compiler.h
+++ b/source/toy_compiler.h
@@ -19,4 +19,4 @@ TOY_API void Toy_writeCompiler(Toy_Compiler* compiler, Toy_ASTNode* node);
 TOY_API void Toy_freeCompiler(Toy_Compiler* compiler);
 
 //embed the header, data section, code section, function section, etc.
-TOY_API unsigned char* Toy_collateCompiler(Toy_Compiler* compiler, int* size);
+TOY_API unsigned char* Toy_collateCompiler(Toy_Compiler* compiler, size_t* size);
diff --git a/source/toy_interpreter.c b/source/toy_interpreter.c
index a4eb387..5f8f47a 100644
--- a/source/toy_interpreter.c
+++ b/source/toy_interpreter.c
@@ -21,9 +21,7 @@ static void printWrapper(const char* output) {
 }
 
 static void assertWrapper(const char* output) {
-	fprintf(stderr, TOY_CC_ERROR "Assertion failure: ");
-	fprintf(stderr, "%s", output);
-	fprintf(stderr, "\n" TOY_CC_RESET); //default new line
+	fprintf(stderr, TOY_CC_ERROR "Assertion failure: %s\n" TOY_CC_RESET, output);
 }
 
 static void errorWrapper(const char* output) {
@@ -1179,6 +1177,8 @@ static bool execFnCall(Toy_Interpreter* interpreter, bool looseFirstArgument) {
 bool Toy_callLiteralFn(Toy_Interpreter* interpreter, Toy_Literal func, Toy_LiteralArray* arguments, Toy_LiteralArray* returns) {
 	//check for side-loaded native functions
 	if (TOY_IS_FUNCTION_NATIVE(func)) {
+		//TODO: parse out identifier values, see issue #64
+
 		//call the native function
 		int returnsCount = TOY_AS_FUNCTION_NATIVE(func)(interpreter, arguments);
 
diff --git a/source/toy_lexer.c b/source/toy_lexer.c
index 333592a..80dd566 100644
--- a/source/toy_lexer.c
+++ b/source/toy_lexer.c
@@ -117,7 +117,7 @@ static Toy_Token makeErrorToken(Toy_Lexer* lexer, char* msg) {
 #ifndef TOY_EXPORT
 	if (Toy_commandLine.verbose) {
 		printf("err:");
-		Toy_printToken(&token);
+		Toy_private_printToken(&token);
 	}
 #endif
 
@@ -136,7 +136,7 @@ static Toy_Token makeToken(Toy_Lexer* lexer, Toy_TokenType type) {
 	//BUG #10: this shows TOKEN_EOF twice due to the overarching structure of the program - can't be fixed
 	if (Toy_commandLine.verbose) {
 		printf("tok:");
-		Toy_printToken(&token);
+		Toy_private_printToken(&token);
 	}
 #endif
 
@@ -168,7 +168,7 @@ static Toy_Token makeIntegerOrFloat(Toy_Lexer* lexer) {
 		} else {
 			printf("flt:");
 		}
-		Toy_printToken(&token);
+		Toy_private_printToken(&token);
 	}
 #endif
 
@@ -221,7 +221,7 @@ static Toy_Token makeString(Toy_Lexer* lexer, char terminator) {
 #ifndef TOY_EXPORT
 	if (Toy_commandLine.verbose) {
 		printf("str:");
-		Toy_printToken(&token);
+		Toy_private_printToken(&token);
 	}
 #endif
 
@@ -248,7 +248,7 @@ static Toy_Token makeKeywordOrIdentifier(Toy_Lexer* lexer) {
 #ifndef TOY_EXPORT
 			if (Toy_commandLine.verbose) {
 				printf("kwd:");
-				Toy_printToken(&token);
+				Toy_private_printToken(&token);
 			}
 #endif
 
@@ -267,7 +267,7 @@ static Toy_Token makeKeywordOrIdentifier(Toy_Lexer* lexer) {
 #ifndef TOY_EXPORT
 	if (Toy_commandLine.verbose) {
 		printf("idf:");
-		Toy_printToken(&token);
+		Toy_private_printToken(&token);
 	}
 #endif
 
@@ -281,7 +281,7 @@ void Toy_initLexer(Toy_Lexer* lexer, const char* source) {
 	lexer->source = source;
 }
 
-Toy_Token Toy_scanLexer(Toy_Lexer* lexer) {
+Toy_Token Toy_private_scanLexer(Toy_Lexer* lexer) {
 	eatWhitespace(lexer);
 
 	lexer->start = lexer->current;
@@ -352,7 +352,7 @@ static void trim(char** s, int* l) { //all this to remove a newline?
 }
 
 //for debugging
-void Toy_printToken(Toy_Token* token) {
+void Toy_private_printToken(Toy_Token* token) {
 	if (token->type == TOY_TOKEN_ERROR) {
 		printf(TOY_CC_ERROR "Error\t%d\t%.*s\n" TOY_CC_RESET, token->line, token->length, token->lexeme);
 		return;
diff --git a/source/toy_lexer.h b/source/toy_lexer.h
index af361b3..c45f237 100644
--- a/source/toy_lexer.h
+++ b/source/toy_lexer.h
@@ -21,9 +21,9 @@ typedef struct {
 } Toy_Token;
 
 TOY_API void Toy_initLexer(Toy_Lexer* lexer, const char* source);
-TOY_API Toy_Token Toy_scanLexer(Toy_Lexer* lexer);
+TOY_API Toy_Token Toy_private_scanLexer(Toy_Lexer* lexer);
 
 //for debugging
-TOY_API void Toy_printToken(Toy_Token* token);
+TOY_API void Toy_private_printToken(Toy_Token* token);
 
 TOY_API void Toy_private_setComments(Toy_Lexer* lexer, bool enabled);
diff --git a/source/toy_parser.c b/source/toy_parser.c
index 3e6fb7e..9f5dbd2 100644
--- a/source/toy_parser.c
+++ b/source/toy_parser.c
@@ -32,7 +32,7 @@ static void error(Toy_Parser* parser, Toy_Token token, const char* message) {
 
 static void advance(Toy_Parser* parser) {
 	parser->previous = parser->current;
-	parser->current = Toy_scanLexer(parser->lexer);
+	parser->current = Toy_private_scanLexer(parser->lexer);
 
 	if (parser->current.type == TOY_TOKEN_ERROR) {
 		error(parser, parser->current, "Toy_Lexer error");
diff --git a/test/test_compiler.c b/test/test_compiler.c
index d4b0a9f..c3c3b80 100644
--- a/test/test_compiler.c
+++ b/test/test_compiler.c
@@ -39,7 +39,7 @@ int main() {
 		Toy_writeCompiler(&compiler, node);
 
 		//collate
-		int size = 0;
+		size_t size = 0;
 		unsigned char* bytecode = Toy_collateCompiler(&compiler, &size);
 
 		//cleanup
@@ -78,7 +78,7 @@ int main() {
 		}
 
 		//collate
-		int size = 0;
+		size_t size = 0;
 		unsigned char* bytecode = Toy_collateCompiler(&compiler, &size);
 
 		//cleanup
diff --git a/test/test_interpreter.c b/test/test_interpreter.c
index 3de9107..12c3ab5 100644
--- a/test/test_interpreter.c
+++ b/test/test_interpreter.c
@@ -87,7 +87,7 @@ int main() {
 		Toy_writeCompiler(&compiler, node);
 
 		//collate
-		int size = 0;
+		size_t size = 0;
 		const unsigned char* bytecode = Toy_collateCompiler(&compiler, &size);
 
 		//NOTE: suppress print output for testing
diff --git a/test/test_lexer.c b/test/test_lexer.c
index 41bd34c..a6df522 100644
--- a/test/test_lexer.c
+++ b/test/test_lexer.c
@@ -15,10 +15,10 @@ int main() {
 		Toy_initLexer(&lexer, source);
 
 		//get each token
-		Toy_Token print = Toy_scanLexer(&lexer);
-		Toy_Token null = Toy_scanLexer(&lexer);
-		Toy_Token semi = Toy_scanLexer(&lexer);
-		Toy_Token eof = Toy_scanLexer(&lexer);
+		Toy_Token print = Toy_private_scanLexer(&lexer);
+		Toy_Token null = Toy_private_scanLexer(&lexer);
+		Toy_Token semi = Toy_private_scanLexer(&lexer);
+		Toy_Token eof = Toy_private_scanLexer(&lexer);
 
 		//test each token is correct
 		if (strncmp(print.lexeme, "print", print.length)) {
diff --git a/test/test_mustfail.c b/test/test_mustfail.c
index 42997ae..5952bc9 100644
--- a/test/test_mustfail.c
+++ b/test/test_mustfail.c
@@ -50,7 +50,7 @@ const unsigned char* compileStringCustom(const char* source, size_t* size) {
 	}
 
 	//get the bytecode dump
-	const unsigned char* tb = Toy_collateCompiler(&compiler, (int*)(size));
+	const unsigned char* tb = Toy_collateCompiler(&compiler, size);
 
 	//cleanup
 	Toy_freeCompiler(&compiler);