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author | Matthias Schiffer <mschiffer@universe-factory.net> | 2020-04-04 13:22:18 +0200 |
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committer | Matthias Schiffer <mschiffer@universe-factory.net> | 2020-04-04 14:23:00 +0200 |
commit | f0b3d5166ef1255fac880b146875ef46d2599a13 (patch) | |
tree | 61c993cf32dedc1172bcf40cd5207e05a3b032a9 /safe_libc/src/util.rs | |
parent | 52b498494534784c77bfa4a93706be40620ebd9a (diff) | |
download | neco-f0b3d5166ef1255fac880b146875ef46d2599a13.tar neco-f0b3d5166ef1255fac880b146875ef46d2599a13.zip |
Reorganize
Diffstat (limited to 'safe_libc/src/util.rs')
-rw-r--r-- | safe_libc/src/util.rs | 18 |
1 files changed, 18 insertions, 0 deletions
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 +} |