remove undefined behavior in asserts

.cargo/config

@@ -1,7 +1,7 @@
 [target.armv7-none-eabihf]
 rustflags = [
   "-C", "link-arg=-Tlink.x",
-  "-C", "target-feature=a9,armv7-a,neon",
+  "-C", "target-feature=+a9,+armv7-a,+neon",
   "-C", "target-cpu=cortex-a9",
 ]
 

Cargo.toml

@@ -9,6 +9,7 @@ members = [
   "experiments",
   "szl",
 ]
+resolver = "2"
 
 [profile.release]
 panic = "abort"

libcortex_a9/src/uncached.rs

@@ -1,6 +1,5 @@
 use core::{
-    ops::{Deref, DerefMut},
+    mem::{align_of, size_of}, ops::{Deref, DerefMut}, panic
-    mem::{align_of, size_of},
 };
 use alloc::alloc::{dealloc, Layout, LayoutError};
 use crate::mmu::{L1_PAGE_SIZE, L1Table};
@@ -20,7 +19,6 @@ impl<T> UncachedSlice<T> {
         let layout = Layout::from_size_align(size, align)?;
         let ptr = unsafe { alloc::alloc::alloc(layout).cast::<T>() };
         let start = ptr as usize;
-        assert_eq!(start & (L1_PAGE_SIZE - 1), 0);
 
         for page_start in (start..(start + size)).step_by(L1_PAGE_SIZE) {
             // non-shareable device
@@ -31,10 +29,7 @@ impl<T> UncachedSlice<T> {
                     l1_section.bufferable = false;
                 });
         }
-
         let slice = unsafe { core::slice::from_raw_parts_mut(ptr, len) };
-        // verify size
-        assert!(unsafe { slice.get_unchecked(len) } as *const _ as usize <= start + size);
         // initialize
         for e in slice.iter_mut() {
             *e = default();