remove error suggestion because of span issue of compiletest

Author: chenyukang

Diff for: compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -1146,6 +1146,12 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
                     }
                     // don't create labels for compiler-generated spans
                     Some(_) => None,
+                    // don't create labels for the span not from user's code
+                    None if opt_assignment_rhs_span
+                        .is_some_and(|span| self.infcx.tcx.sess.source_map().is_imported(span)) =>
+                    {
+                        None
+                    }
                     None => {
                         let (has_sugg, decl_span, sugg) = if name != kw::SelfLower {
                             suggest_ampmut(
@@ -1335,7 +1341,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
                     };
                     err.span_suggestion_verbose(
                         span,
-                        format!("consider {changing} this binding's type"),
+                        format!("consider {changing} this binding's type xxx"),
                         sugg,
                         Applicability::HasPlaceholders,
                     );
@@ -1449,6 +1455,11 @@ fn suggest_ampmut<'tcx>(
     // let x: &i32 = &'a 5;
     //                ^^ lifetime annotation not allowed
     //
+    eprintln!("opt_assignment_rhs_span: {:?}", opt_assignment_rhs_span);
+    eprintln!(
+        "code result: {:?}",
+        tcx.sess.source_map().span_to_snippet(opt_assignment_rhs_span.unwrap())
+    );
     if let Some(assignment_rhs_span) = opt_assignment_rhs_span
         && let Ok(src) = tcx.sess.source_map().span_to_snippet(assignment_rhs_span)
         && let Some(stripped) = src.strip_prefix('&')

Diff for: tests/ui/suggestions/dont_suggest_raw_pointer_syntax-issue-127562.stderr

@@ -3,11 +3,6 @@ error[E0594]: cannot assign to `*ptr`, which is behind a `*const` pointer
    |
 LL |         *ptr = 3;
    |         ^^^^^^^^ `ptr` is a `*const` pointer, so the data it refers to cannot be written
-   |
-help: consider specifying this binding's type
-   |
-LL |     let ptr: *mut i32 = std::ptr::addr_of!(val);
-   |            ++++++++++
 
 error: aborting due to 1 previous error