From f0b3d5166ef1255fac880b146875ef46d2599a13 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sat, 4 Apr 2020 13:22:18 +0200
Subject: Reorganize

---
 safe_libc/src/util.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 safe_libc/src/util.rs

(limited to 'safe_libc/src/util.rs')

diff --git a/safe_libc/src/util.rs b/safe_libc/src/util.rs
new file mode 100644
index 0000000..b8a4ed5
--- /dev/null
+++ b/safe_libc/src/util.rs
@@ -0,0 +1,18 @@
+use core::mem;
+
+#[inline]
+pub fn zst<T>(len: usize) -> bool {
+	mem::size_of::<T>() == 0 || len == 0
+}
+
+#[inline]
+pub fn check_ptr<T>(p: *const T, len: usize) {
+	debug_assert!((p as usize) % mem::align_of::<T>() == 0, "unaligned ptr");
+	assert!(zst::<T>(len) || !p.is_null(), "NULL ptr");
+}
+
+#[inline]
+pub fn must_succeed<T>(p: *mut T) -> *mut T {
+	assert!(!p.is_null(), "allocation failure");
+	p
+}
-- 
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