From e78d8653cebc1803f669c238b2e42300717af7c8 Mon Sep 17 00:00:00 2001
From: Simon Cozens <simon@simon-cozens.org>
Date: Thu, 2 Mar 2023 19:47:33 +0000
Subject: [PATCH] [wasm-rust] panic if buffer_set_contents fails

---
 src/wasm/rust/harfbuzz-wasm/src/lib.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/wasm/rust/harfbuzz-wasm/src/lib.rs b/src/wasm/rust/harfbuzz-wasm/src/lib.rs
index 61e9da9bf..c33479c59 100644
--- a/src/wasm/rust/harfbuzz-wasm/src/lib.rs
+++ b/src/wasm/rust/harfbuzz-wasm/src/lib.rs
@@ -304,7 +304,9 @@ impl<T: BufferItem> Drop for Buffer<T> {
             position: positions[..].as_mut_ptr(),
         };
         unsafe {
-            buffer_set_contents(self._ptr, &c_contents);
+            if !buffer_set_contents(self._ptr, &c_contents) {
+                panic!("Couldn't set buffer contents");
+            }
         }
     }
 }