[glsl-in] require at least one item inside struct_declaration_list

src/front/glsl/parser.rs

@@ -860,10 +860,6 @@ impl<'source, 'program, 'options> Parser<'source, 'program, 'options> {
         let mut span = 0;
 
         loop {
-            if let TokenValue::RightBrace = self.expect_peek()?.value {
-                break;
-            }
-
             // TODO: type_qualifier
 
             let ty = self.parse_type_non_void()?.0;
@@ -884,6 +880,10 @@ impl<'source, 'program, 'options> Parser<'source, 'program, 'options> {
             span += self.program.module.types[ty]
                 .inner
                 .span(&self.program.module.constants);
+
+            if let TokenValue::RightBrace = self.expect_peek()?.value {
+                break;
+            }
         }
 
         Ok(span)

src/front/glsl/parser_tests.rs

@@ -507,4 +507,13 @@ fn structs() {
         &entry_points,
     )
     .unwrap();
+
+    parse_program(
+        r#"
+        #  version 450
+        struct Test {};
+        "#,
+        &entry_points,
+    )
+    .unwrap_err();
 }