fixes #19000

nim-lang · Oct 21, 2021 · 261c1cf · 261c1cf
1 parent 5e2b934
commit 261c1cf
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/lib/system/memalloc.nim b/lib/system/memalloc.nim
@@ -116,6 +116,9 @@ when hasAlloc and not defined(js):
     ##
     ## See also:
     ## * `create <#create,typedesc>`_
+    static:
+      if sizeof(T) <= 0:
+        {.fatal: "createU does not support types T where sizeof(T) == 0".}
     cast[ptr T](alloc(T.sizeof * size))
 
   template alloc0*(size: Natural): pointer =
@@ -141,6 +144,9 @@ when hasAlloc and not defined(js):
     ##
     ## The allocated memory belongs to its allocating thread!
     ## Use `createShared <#createShared,typedesc>`_ to allocate from a shared heap.
+    static:
+      if sizeof(T) <= 0:
+        {.fatal: "create does not support types T where sizeof(T) == 0".}
     cast[ptr T](alloc0(sizeof(T) * size))
 
   template realloc*(p: pointer, newSize: Natural): pointer =