rustc_target: TyAndLayout::field should never error.

Author: eddyb

src/debuginfo/mod.rs

@@ -160,12 +160,10 @@ impl<'tcx> DebugContext<'tcx> {
 
                 for (field_idx, field_def) in variant.fields.iter().enumerate() {
                     let field_offset = layout.fields.offset(field_idx);
-                    let field_layout = layout
-                        .field(
-                            &layout::LayoutCx { tcx: self.tcx, param_env: ParamEnv::reveal_all() },
-                            field_idx,
-                        )
-                        .unwrap();
+                    let field_layout = layout.field(
+                        &layout::LayoutCx { tcx: self.tcx, param_env: ParamEnv::reveal_all() },
+                        field_idx,
+                    );
 
                     let field_type = self.dwarf_ty(field_layout.ty);
 

src/intrinsics/mod.rs

@@ -789,7 +789,7 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
                 return;
             }
 
-            if intrinsic == sym::assert_zero_valid && !layout.might_permit_raw_init(fx, /*zero:*/ true).unwrap() {
+            if intrinsic == sym::assert_zero_valid && !layout.might_permit_raw_init(fx, /*zero:*/ true) {
                 with_no_trimmed_paths(|| crate::base::codegen_panic(
                     fx,
                     &format!("attempted to zero-initialize type `{}`, which is invalid", T),
@@ -798,7 +798,7 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
                 return;
             }
 
-            if intrinsic == sym::assert_uninit_valid && !layout.might_permit_raw_init(fx, /*zero:*/ false).unwrap() {
+            if intrinsic == sym::assert_uninit_valid && !layout.might_permit_raw_init(fx, /*zero:*/ false) {
                 with_no_trimmed_paths(|| crate::base::codegen_panic(
                     fx,
                     &format!("attempted to leave type `{}` uninitialized, which is invalid", T),