[libc-commits] [libc] [libc] Lazily initialize freelist malloc using symbols (PR #99254)

[via libc-commits]

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@@ -47,17 +50,10 @@ template <size_t NUM_BUCKETS = DEFAULT_BUCKETS.size()> class FreeListHeap {
     size_t total_free_calls;
   };
 
-  FreeListHeap(span<cpp::byte> region)
-      : FreeListHeap(&*region.begin(), &*region.end(), region.size()) {
-    auto result = BlockType::init(region);
-    BlockType *block = *result;
-    freelist_.add_chunk(block_to_span(block));
-  }
-
-  constexpr FreeListHeap(void *start, cpp::byte *end, size_t total_bytes)
-      : block_region_start_(start), block_region_end_(end),
-        freelist_(DEFAULT_BUCKETS), heap_stats_{} {
-    heap_stats_.total_bytes = total_bytes;
+  constexpr FreeListHeap(span<cpp::byte> region)
+      : is_initialized_(false), region_(region), freelist_(DEFAULT_BUCKETS),
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PiJoules wrote:

Not sure if I'm overthinking this, but are these guaranteed to be link-initialized to their default values for the global in freelist_malloc.cpp?

https://github.com/llvm/llvm-project/pull/99254