Remove unused struct_error function.

Author: nnethercote

compiler/rustc_middle/src/mir/interpret/error.rs

@@ -2,14 +2,10 @@ use super::{AllocId, AllocRange, Pointer, Scalar};
 
 use crate::error;
 use crate::mir::{ConstAlloc, ConstValue};
-use crate::query::TyCtxtAt;
 use crate::ty::{layout, tls, Ty, TyCtxt, ValTree};
 
 use rustc_data_structures::sync::Lock;
-use rustc_errors::{
-    struct_span_err, DiagnosticArgValue, DiagnosticBuilder, DiagnosticMessage, ErrorGuaranteed,
-    IntoDiagnosticArg,
-};
+use rustc_errors::{DiagnosticArgValue, DiagnosticMessage, ErrorGuaranteed, IntoDiagnosticArg};
 use rustc_macros::HashStable;
 use rustc_session::CtfeBacktrace;
 use rustc_span::{def_id::DefId, Span, DUMMY_SP};
@@ -90,10 +86,6 @@ pub type EvalToConstValueResult<'tcx> = Result<ConstValue<'tcx>, ErrorHandled>;
 /// This is needed in `thir::pattern::lower_inline_const`.
 pub type EvalToValTreeResult<'tcx> = Result<Option<ValTree<'tcx>>, ErrorHandled>;
 
-pub fn struct_error<'tcx>(tcx: TyCtxtAt<'tcx>, msg: &str) -> DiagnosticBuilder<'tcx> {
-    struct_span_err!(tcx.dcx(), tcx.span, E0080, "{}", msg)
-}
-
 #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
 static_assert_size!(InterpErrorInfo<'_>, 8);
 

compiler/rustc_middle/src/mir/interpret/mod.rs

@@ -142,12 +142,11 @@ use crate::ty::GenericArgKind;
 use crate::ty::{self, Instance, Ty, TyCtxt};
 
 pub use self::error::{
-    struct_error, BadBytesAccess, CheckAlignMsg, CheckInAllocMsg, ErrorHandled,
-    EvalToAllocationRawResult, EvalToConstValueResult, EvalToValTreeResult, ExpectedKind,
-    InterpError, InterpErrorInfo, InterpResult, InvalidMetaKind, InvalidProgramInfo,
-    MachineStopType, Misalignment, PointerKind, ReportedErrorInfo, ResourceExhaustionInfo,
-    ScalarSizeMismatch, UndefinedBehaviorInfo, UnsupportedOpInfo, ValidationErrorInfo,
-    ValidationErrorKind,
+    BadBytesAccess, CheckAlignMsg, CheckInAllocMsg, ErrorHandled, EvalToAllocationRawResult,
+    EvalToConstValueResult, EvalToValTreeResult, ExpectedKind, InterpError, InterpErrorInfo,
+    InterpResult, InvalidMetaKind, InvalidProgramInfo, MachineStopType, Misalignment, PointerKind,
+    ReportedErrorInfo, ResourceExhaustionInfo, ScalarSizeMismatch, UndefinedBehaviorInfo,
+    UnsupportedOpInfo, ValidationErrorInfo, ValidationErrorKind,
 };
 
 pub use self::value::Scalar;