Fix signatures

2 files changed, 28 insertions, 1 deletions

diff --git a/src/common/ast.odin b/src/common/ast.odin
index 62ae7e9..ff6f7e2 100644
--- a/src/common/ast.odin
+++ b/src/common/ast.odin
@@ -771,7 +771,12 @@ build_string_node :: proc(node: ^ast.Node, builder: ^strings.Builder) {
 	case Call_Expr:
 		build_string(n.expr, builder);
 		strings.write_string(builder, "(");
-		build_string(n.args, builder);
+		for arg, i in n.args {
+			build_string(arg, builder);
+			if len(n.args) - 1 != i {
+				strings.write_string(builder, ", ");
+			}
+		}
 		strings.write_string(builder, ")");
 	case Selector_Expr:
 		build_string(n.expr, builder);
diff --git a/tests/signatures_test.odin b/tests/signatures_test.odin
index 0e0af1f..9363962 100644
--- a/tests/signatures_test.odin
+++ b/tests/signatures_test.odin
@@ -486,6 +486,28 @@ shared_value_decl_type_signature :: proc(t: ^testing.T) {
     test.expect_signature_labels(t, &source, {"test.my_function: proc(a: int, b: int)"});
 }
 
+@(test)
+proc_with_struct_poly :: proc(t: ^testing.T) {
+    source := test.Source {
+		main = `package test
+		U :: struct(N: int, E: typetid) {
+			t: [N]E,
+		}
+
+		uf :: proc(u: U($T, $E)) {
+		}
+
+		main :: proc() {		
+			uf(*)
+		}
+		`,
+		packages = {},
+	};
+
+    test.expect_signature_labels(t, &source, {"test.uf: proc(u: U($T, $E))"});
+}
+
+
 /*
 @(test)
 signature_function_inside_when :: proc(t: ^testing.T) {