Signature ID loads are readonly.

2019-01-03 11:14:13 -08:00
parent 8939d1252a
commit 1ae5c13b8c
1 changed files with 2 additions and 1 deletions
--- a/lib/environ/src/func_environ.rs
+++ b/lib/environ/src/func_environ.rs
@@ -546,7 +546,8 @@ impl<'module_environment> cranelift_wasm::FuncEnvironment for FuncEnvironment<'m
                let sig_ids = pos.ins().global_value(pointer_type, signature_ids_base);

                // Load the caller ID.
-                let mem_flags = ir::MemFlags::trusted();
+                let mut mem_flags = ir::MemFlags::trusted();
+                mem_flags.set_readonly();
                let caller_sig_id = pos.ins().load(
                    sig_id_type,
                    mem_flags,