no :: in func decls

compiler/parser/parser.odin

@@ -2256,6 +2256,11 @@ parse_top_level :: proc(parser: ^Parser) {
 		}
 		parser.cursor = saved
 	}
+	if current(parser).kind == .Keyword_Func || current(parser).kind == .Keyword_C_Func {
+		c_abi := current(parser).kind == .Keyword_C_Func
+		parse_function(parser, name, c_abi)
+		return
+	}
 	type_syntax := types.INVALID
 	if is_type_token(current(parser).kind) {
 		type_syntax = parse_type(parser)
@@ -2271,6 +2276,8 @@ parse_top_level :: proc(parser: ^Parser) {
 
 	if operator.kind == .Colon_Colon &&
 	   (current(parser).kind == .Keyword_Func || current(parser).kind == .Keyword_C_Func) {
+		source.add(parser.diagnostics, span_from(name.span, current(parser).span),
+		           "function declarations do not use '::'; write 'name func(...)' or 'name c_func(...)'")
 		c_abi := current(parser).kind == .Keyword_C_Func
 		parse_function(parser, name, c_abi)
 		return

compiler/translatec/translatec.odin

@@ -279,7 +279,7 @@ emit_functions :: proc(b: ^strings.Builder, result: ^cimport.Result, record_name
 			wrote = true
 			continue
 		}
-		fmt.sbprintf(b, "%s :: ", function.name)
+		fmt.sbprintf(b, "%s ", function.name)
 		render_c_func(b, result, function.params, function.param_names, function.result, function.variadic, record_names)
 		strings.write_byte(b, '\n')
 		wrote = true