Migrate NonConstOp diagnostic

compiler/rustc_const_eval/src/errors.rs

@@ -19,3 +19,10 @@ pub(crate) struct UnstableInStable {
     )]
     pub attr_span: Span,
 }
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::thread_local_access, code = "E0625")]
+pub(crate) struct NonConstOpErr {
+    #[primary_span]
+    pub span: Span,
+}

compiler/rustc_const_eval/src/transform/check_consts/ops.rs

@@ -20,6 +20,7 @@ use rustc_span::{BytePos, Pos, Span, Symbol};
 use rustc_trait_selection::traits::SelectionContext;
 
 use super::ConstCx;
+use crate::errors::NonConstOpErr;
 use crate::util::{call_kind, CallDesugaringKind, CallKind};
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
@@ -760,13 +761,7 @@ impl<'tcx> NonConstOp<'tcx> for ThreadLocalAccess {
         ccx: &ConstCx<'_, 'tcx>,
         span: Span,
     ) -> DiagnosticBuilder<'tcx, ErrorGuaranteed> {
-        struct_span_err!(
-            ccx.tcx.sess,
-            span,
-            E0625,
-            "thread-local statics cannot be \
-            accessed at compile-time"
-        )
+        ccx.tcx.sess.create_err(NonConstOpErr { span })
     }
 }
 

compiler/rustc_error_messages/locales/en-US/const_eval.ftl

@@ -2,3 +2,6 @@ const-eval-unstable-in-stable =
     const-stable function cannot use `#[feature({$gate})]`
     .unstable-sugg = if it is not part of the public API, make this function unstably const
     .bypass-sugg = otherwise `#[rustc_allow_const_fn_unstable]` can be used to bypass stability checks
+
+const-eval-thread-local-access =
+    thread-local statics cannot be accessed at compile-time