From 576369bfce92f98f78bdac31067d8cb8fee7b0a2 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Tue, 2 Jul 2019 12:51:00 +0200
Subject: improve and deduplicate comments

---
 src/libstd/sys/unix/alloc.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'src/libstd/sys/unix')

diff --git a/src/libstd/sys/unix/alloc.rs b/src/libstd/sys/unix/alloc.rs
index c5b6a360dd3..4ac66230e6e 100644
--- a/src/libstd/sys/unix/alloc.rs
+++ b/src/libstd/sys/unix/alloc.rs
@@ -9,7 +9,8 @@ unsafe impl GlobalAlloc for System {
     unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
         // jemalloc provides alignment less than MIN_ALIGN for small allocations.
         // So only rely on MIN_ALIGN if size >= align.
-        // Also see <https://github.com/rust-lang/rust/issues/45955>.
+        // Also see <https://github.com/rust-lang/rust/issues/45955> and
+        // <https://github.com/rust-lang/rust/issues/62251#issuecomment-507580914>.
         if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() {
             libc::malloc(layout.size()) as *mut u8
         } else {
@@ -25,9 +26,7 @@ unsafe impl GlobalAlloc for System {
 
     #[inline]
     unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
-        // jemalloc provides alignment less than MIN_ALIGN for small allocations.
-        // So only rely on MIN_ALIGN if size >= align.
-        // Also see <https://github.com/rust-lang/rust/issues/45955>.
+        // See the comment above in `alloc` for why this check looks the way it does.
         if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() {
             libc::calloc(layout.size(), 1) as *mut u8
         } else {
-- 
cgit 1.4.1-3-g733a5