[Beta 1.77] Fix bootstrapping from 1.76

compiler/rustc_codegen_llvm/src/lib.rs

@@ -8,6 +8,7 @@
 #![feature(rustdoc_internals)]
 #![doc(rust_logo)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
+#![cfg_attr(bootstrap, feature(c_str_literals))]
 #![feature(exact_size_is_empty)]
 #![feature(extern_types)]
 #![feature(hash_raw_entry)]

compiler/rustc_lint/src/lib.rs

@@ -34,9 +34,9 @@
 #![feature(if_let_guard)]
 #![feature(iter_order_by)]
 #![feature(let_chains)]
-#![cfg_attr(not(bootstrap), feature(trait_upcasting))]
 #![feature(min_specialization)]
 #![feature(rustc_attrs)]
+#![feature(trait_upcasting)]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 #![allow(internal_features)]

compiler/rustc_llvm/src/lib.rs

@@ -1,6 +1,7 @@
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
+#![cfg_attr(bootstrap, feature(c_str_literals))]
 #![doc(rust_logo)]
 #![feature(rustdoc_internals)]
 #![allow(internal_features)]

compiler/rustc_middle/src/lib.rs

@@ -48,7 +48,7 @@
 #![feature(associated_type_bounds)]
 #![feature(rustc_attrs)]
 #![feature(control_flow_enum)]
-#![cfg_attr(not(bootstrap), feature(trait_upcasting))]
+#![feature(trait_upcasting)]
 #![feature(try_blocks)]
 #![feature(decl_macro)]
 #![feature(extract_if)]

library/core/tests/lib.rs

@@ -111,7 +111,7 @@
 #![feature(slice_flatten)]
 #![feature(error_generic_member_access)]
 #![feature(error_in_core)]
-#![cfg_attr(not(bootstrap), feature(trait_upcasting))]
+#![feature(trait_upcasting)]
 #![feature(utf8_chunks)]
 #![feature(is_ascii_octdigit)]
 #![feature(get_many_mut)]

library/std/src/lib.rs

@@ -309,6 +309,7 @@
 //
 // Library features (core):
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(c_str_literals))]
 #![feature(char_internals)]
 #![feature(core_intrinsics)]
 #![feature(core_io_borrowed_buf)]

src/tools/miri/src/lib.rs

@@ -10,7 +10,7 @@
 #![feature(nonzero_ops)]
 #![feature(let_chains)]
 #![feature(lint_reasons)]
-#![cfg_attr(not(bootstrap), feature(trait_upcasting))]
+#![feature(trait_upcasting)]
 // Configure clippy and other lints
 #![allow(
     clippy::collapsible_else_if,