From e6a206a430ab034d2a1b3b60577639b75e90cbbe Mon Sep 17 00:00:00 2001
From: Ginger Bill <bill@gingerbill.org>
Date: Mon, 12 Jun 2017 16:58:25 +0100
Subject: Check for empty generic declaration list

---
 src/parser.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'src/parser.cpp')

diff --git a/src/parser.cpp b/src/parser.cpp
index c96070044..a5dead4ce 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -2567,11 +2567,19 @@ AstNode *parse_gen_decl(AstFile *f, Token token, ParseSpecFunc *func) {
 			expect_semicolon(f, spec);
 		}
 		close = expect_token(f, Token_CloseParen);
+		if (f->curr_token.pos.line == close.pos.line ||
+		    open.pos.line == close.pos.line) {
+			expect_semicolon(f, NULL);
+		}
 	} else {
 		array_init(&specs, heap_allocator(), 1);
 		array_add(&specs, func(f, token));
 	}
 
+	if (specs.count == 0) {
+		syntax_error(token, "Empty %.*s declaration list", LIT(token_strings[token.kind]));
+	}
+
 	AstNode *decl = ast_gen_decl(f, token, open, close, specs);
 	if (token.kind == Token_let) {
 		decl->GenDecl.flags |= VarDeclFlag_immutable;
@@ -2790,7 +2798,6 @@ AstNode *parse_decl(AstFile *f) {
 
 	Token token = f->curr_token;
 	next_token(f);
-
 	return parse_gen_decl(f, token, func);
 }
 
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