1 files changed, 6 insertions, 0 deletions
diff --git a/src/qml/compiler/qqmlirbuilder.cpp b/src/qml/compiler/qqmlirbuilder.cpp
index f43d7bc06f..89f99e21cd 100644
--- a/src/qml/compiler/qqmlirbuilder.cpp
+++ b/src/qml/compiler/qqmlirbuilder.cpp
@@ -553,6 +553,12 @@ bool IRBuilder::visit(QQmlJS::AST::UiInlineComponent *ast)
         recordError(ast->firstSourceLocation(), QLatin1String("Nested inline components are not supported"));
         return false;
     }
+    if (inlineComponentsNames.contains(ast->name.toString())) {
+        recordError(ast->firstSourceLocation(), QLatin1String("Inline component names must be unique per file"));
+        return false;
+    } else {
+        inlineComponentsNames.insert(ast->name.toString());
+    }
     {
         QScopedValueRollback<bool> rollBack {insideInlineComponent, true};
         if (!defineQMLObject(&idx, ast->component))