From 20ccd9f67cb9294af7f988d784bb82b63cbcfff1 Mon Sep 17 00:00:00 2001
From: mtb0x1 <mtb0x10x1@gmail.com>
Date: Tue, 18 Nov 2025 14:01:42 +0100
Subject: [PATCH] fix : make sure at least one header was provided

---
 bindgen-tests/tests/tests.rs | 6 ++++++
 bindgen/lib.rs               | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/bindgen-tests/tests/tests.rs b/bindgen-tests/tests/tests.rs
index 6e3c358d3e..ca9c552bb4 100644
--- a/bindgen-tests/tests/tests.rs
+++ b/bindgen-tests/tests/tests.rs
@@ -563,6 +563,12 @@ fn test_mixed_header_and_header_contents() {
     }
 }
 
+#[test]
+#[should_panic(expected = "No headers provided")]
+fn test_no_header_provided() {
+    let _ = builder().generate();
+}
+
 #[test]
 fn test_macro_fallback_non_system_dir() {
     let actual = builder()
diff --git a/bindgen/lib.rs b/bindgen/lib.rs
index 644d9a68d9..6bc817aca3 100644
--- a/bindgen/lib.rs
+++ b/bindgen/lib.rs
@@ -336,6 +336,11 @@ impl Builder {
                 .map(String::into_boxed_str),
         );
 
+        assert!(
+            !self.options.input_headers.is_empty() ||
+                !self.options.input_header_contents.is_empty(),
+            "No headers provided"
+        );
         for header in &self.options.input_headers {
             self.options
                 .for_each_callback(|cb| cb.header_file(header.as_ref()));