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-rw-r--r--compiler/rustc_lint/messages.ftl5
1 files changed, 5 insertions, 0 deletions
diff --git a/compiler/rustc_lint/messages.ftl b/compiler/rustc_lint/messages.ftl
index b470dea5e82..6913fa3e60b 100644
--- a/compiler/rustc_lint/messages.ftl
+++ b/compiler/rustc_lint/messages.ftl
@@ -807,6 +807,11 @@ lint_type_ir_inherent_usage = do not use `rustc_type_ir::inherent` unless you're
 lint_type_ir_trait_usage = do not use `rustc_type_ir::Interner` or `rustc_type_ir::InferCtxtLike` unless you're inside of the trait solver
     .note = the method or struct you're looking for is likely defined somewhere else downstream in the compiler
 
+lint_undefined_transmute = pointers cannot be transmuted to integers during const eval
+    .note = at compile-time, pointers do not have an integer value
+    .note2 = avoiding this restriction via `union` or raw pointers leads to compile-time undefined behavior
+    .help = for more information, see https://doc.rust-lang.org/std/mem/fn.transmute.html
+
 lint_undropped_manually_drops = calls to `std::mem::drop` with `std::mem::ManuallyDrop` instead of the inner value does nothing
     .label = argument has type `{$arg_ty}`
     .suggestion = use `std::mem::ManuallyDrop::into_inner` to get the inner value