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-rw-r--r--www/iridium/files/patch-build_rust_allocator_lib.rs59
1 files changed, 59 insertions, 0 deletions
diff --git a/www/iridium/files/patch-build_rust_allocator_lib.rs b/www/iridium/files/patch-build_rust_allocator_lib.rs
new file mode 100644
index 000000000000..cfb992f08880
--- /dev/null
+++ b/www/iridium/files/patch-build_rust_allocator_lib.rs
@@ -0,0 +1,59 @@
+--- build/rust/allocator/lib.rs.orig 2025-09-10 13:22:16 UTC
++++ build/rust/allocator/lib.rs
+@@ -90,6 +90,12 @@ mod both_allocators {
+ #[linkage = "weak"]
+ fn __rust_no_alloc_shim_is_unstable_v2() {}
+
++ // TODO(crbug.com/422538133) Remove after rolling past
++ // https://github.com/rust-lang/rust/pull/141061
++ #[no_mangle]
++ #[linkage = "weak"]
++ static __rust_no_alloc_shim_is_unstable: u8 = 0;
++
+ // Mangle the symbol name as rustc expects.
+ #[rustc_std_internal_symbol]
+ #[allow(non_upper_case_globals)]
+https://issues.chromium.org/issues/440481922
+https://chromium-review.googlesource.com/c/chromium/src/+/6875644
+
+
+From 23d818d3c7fba4658248f17fd7b8993199242aa9 Mon Sep 17 00:00:00 2001
+From: Hans Wennborg <hans@chromium.org>
+Date: Fri, 22 Aug 2025 10:34:47 -0700
+Subject: [PATCH] [rust] Define __rust_alloc_error_handler_should_panic_v2
+
+https://github.com/rust-lang/rust/pull/143387 made
+__rust_alloc_error_handler_should_panic a function.
+
+The new definition is needed when rolling Rust past that PR. We can
+remove the old symbol afterwards.
+
+Bug: 440481922
+Change-Id: I3340edd6d96d76de14942af67939978140430424
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6875644
+Commit-Queue: Arthur Eubanks <aeubanks@google.com>
+Reviewed-by: Arthur Eubanks <aeubanks@google.com>
+Auto-Submit: Hans Wennborg <hans@chromium.org>
+Commit-Queue: Hans Wennborg <hans@chromium.org>
+Cr-Commit-Position: refs/heads/main@{#1505162}
+---
+
+diff --git a/build/rust/allocator/lib.rs b/build/rust/allocator/lib.rs
+index 29b3af1..a7fa7a4 100644
+--- build/rust/allocator/lib.rs
++++ build/rust/allocator/lib.rs
+@@ -90,7 +90,14 @@
+ #[linkage = "weak"]
+ fn __rust_no_alloc_shim_is_unstable_v2() {}
+
++ #[rustc_std_internal_symbol]
++ #[linkage = "weak"]
++ fn __rust_alloc_error_handler_should_panic_v2() -> u8 {
++ 0
++ }
++
+ // Mangle the symbol name as rustc expects.
++ // TODO(crbug.com/440481922): Remove this after rolling past https://github.com/rust-lang/rust/pull/143387
+ #[rustc_std_internal_symbol]
+ #[allow(non_upper_case_globals)]
+ #[linkage = "weak"]