[julia/io_leak] "memory leak" in the young gen. JuliaLang/julia#11814

julia/io_leak/io_leak.jl

@@ -0,0 +1,47 @@
+#!/usr/bin/julia -f
+
+close2(s) = nothing
+
+function f1(n)
+    for i in 1:n
+        s = zeros(UInt8, 152)
+        finalizer(s, close2)
+        # gc()
+        # finalize(s)
+        i % 10000 == 0 && println(i)
+    end
+end
+# f1(6000_000)
+
+@eval type A
+    $([symbol("a$i") for i in 1:100]...)
+    A() = new()
+end
+
+type B
+    a::A
+end
+
+function f2(n)
+    for i in 1:n
+        s = B(A())
+        finalizer(s, close2)
+        # gc()
+        # finalize(s)
+        i % 10000 == 0 && (println(i); gc())
+    end
+end
+
+function f3(n)
+    for i in 1:n
+        s = A()
+        finalizer(s, close2)
+        # gc()
+        # finalize(s)
+        i % 10000 == 0 && (println(i); gc())
+    end
+end
+
+f2(6000_000)
+
+sleep(3)