Minor fixes.

lib/std/io_printf.c3

@@ -52,6 +52,14 @@ macro void printf_register_to_string($Type)
 	printf_register($Type.typeid, (PrintFunction)&$Type.to_string);
 }
 
+static initialize @priority(101)
+{
+	if (!print_functions.table.len)
+	{
+		print_functions.init(512);
+	}
+}
+
 fn void printf_register(typeid type, PrintFunction function)
 {
 	if (!print_functions.table.len)

lib/std/map.c3

@@ -50,6 +50,7 @@ fn bool HashMap.is_empty(HashMap* map) @inline
 
 fn Value*! HashMap.get_ref(HashMap* map, Key key)
 {
+	if (!map.count) return SearchResult.MISSING!;
 	uint hash = rehash(key.hash());
 	for (Entry *e = map.table[index_for(hash, map.table.len)]; e != null; e = e.next)
 	{

src/compiler/lexer.c

@@ -360,7 +360,11 @@ static inline bool scan_ident(Lexer *lexer, TokenType normal, TokenType const_to
 	if (!type)
 	{
 		if (!prefix && len == 1) return return_token(lexer, TOKEN_UNDERSCORE, "_");
-		add_error_token(lexer, "An identifier may not consist of only '_' characters.");
+		if (prefix && len == 1)
+		{
+			return add_error_token(lexer, "An identifier was expected after the '%c'.", prefix);
+		}
+		return add_error_token(lexer, "An identifier may not consist of only '_' characters.");
 	}
 	const char* interned_string = symtab_add(lexer->lexing_start, len, hash, &type);
 	if (type == TOKEN_RETURN && lexer->mode == LEX_DOCS) type = TOKEN_IDENT;

src/compiler/llvm_codegen_function.c

@@ -682,9 +682,6 @@ void llvm_emit_function_decl(GenContext *c, Decl *decl)
 
 	LLVMValueRef function = llvm_get_ref(c, decl);
 	decl->backend_ref = function;
-	printf("-%p-%s\n", function, decl->name);
-	printf("%s", LLVMPrintValueToString(function));
-	printf("---\n");
 	FunctionPrototype *prototype = decl->type->function.prototype;
 
 	ABIArgInfo *ret_abi_info = prototype->ret_abi_info;

src/version.h

@@ -1 +1 @@
-#define COMPILER_VERSION "0.3.63"
+#define COMPILER_VERSION "0.3.64"