Reenable debug assertions for libstd on macOS

m4b/faerie#91 has been merged

Author: bjorn3

build_sysroot/Cargo.toml

@@ -17,11 +17,5 @@ rustc-std-workspace-core = { path = "./sysroot_src/src/tools/rustc-std-workspace
 rustc-std-workspace-alloc = { path = "./sysroot_src/src/tools/rustc-std-workspace-alloc" }
 rustc-std-workspace-std = { path = "./sysroot_src/src/tools/rustc-std-workspace-std" }
 
-[profile.dev]
-# FIXME On macOS statics and promoted constants have the wrong alignment. This causes a debug
-# assertion in `copy_nonoverlapping` to panic.
-debug-assertions = false
-
 [profile.release]
 debug = true
-debug-assertions = false

example/mini_core_hello_world.rs

@@ -137,11 +137,7 @@ fn main() {
     let slice = &[0, 1] as &[i32];
     let slice_ptr = slice as *const [i32] as *const i32;
 
-    // FIXME On macOS statics and promoted constants have the wrong alignment. This causes this
-    // assertion to fail.
-    if cfg!(not(target_os = "macos")) {
-        assert_eq!(slice_ptr as usize % 4, 0);
-    }
+    assert_eq!(slice_ptr as usize % 4, 0);
 
     //return;