disable talloc2 on 32 bits (#10656)

tests/system/talloc2.nim

@@ -1,46 +1,45 @@
 discard """
 disabled: "windows"
 joinable: false
+disabled: 32bit
 """
-
+# no point to test this on system with smaller address space
 # appveyor is "out of memory"
 
-when sizeof(int) >= 8:
-  # no point to test this on system with smaller address space
-  const
-    nmax = 2*1024*1024*1024
+const
+  nmax = 2*1024*1024*1024
 
-  proc test(n: int) =
-    var a = alloc0(9999)
-    var t = cast[ptr UncheckedArray[int8]](alloc(n))
-    var b = alloc0(9999)
-    t[0] = 1
-    t[1] = 2
-    t[n-2] = 3
-    t[n-1] = 4
-    dealloc(a)
-    dealloc(t)
-    dealloc(b)
+proc test(n: int) =
+  var a = alloc0(9999)
+  var t = cast[ptr UncheckedArray[int8]](alloc(n))
+  var b = alloc0(9999)
+  t[0] = 1
+  t[1] = 2
+  t[n-2] = 3
+  t[n-1] = 4
+  dealloc(a)
+  dealloc(t)
+  dealloc(b)
 
-  # allocator adds 48 bytes to BigChunk
-  # BigChunk allocator edges at 2^n * (1 - s) for s = [1..32]/64
-  proc test2(n: int) =
-    let d = n div 256  # cover edges and more
-    for i in countdown(128,1):
-      for j in [-4096, -64, -49, -48, -47, -32, 0, 4096]:
-        let b = n + j - i*d
-        if b>0 and b<=nmax:
-          test(b)
-          #echo b, ": ", getTotalMem(), " ", getOccupiedMem(), " ", getFreeMem()
+# allocator adds 48 bytes to BigChunk
+# BigChunk allocator edges at 2^n * (1 - s) for s = [1..32]/64
+proc test2(n: int) =
+  let d = n div 256  # cover edges and more
+  for i in countdown(128,1):
+    for j in [-4096, -64, -49, -48, -47, -32, 0, 4096]:
+      let b = n + j - i*d
+      if b>0 and b<=nmax:
+        test(b)
+        #echo b, ": ", getTotalMem(), " ", getOccupiedMem(), " ", getFreeMem()
 
-  proc test3 =
-    var n = 1
-    while n <= nmax:
-      test2(n)
-      n *= 2
-    n = nmax
-    while n >= 1:
-      test2(n)
-      n = n div 2
+proc test3 =
+  var n = 1
+  while n <= nmax:
+    test2(n)
+    n *= 2
+  n = nmax
+  while n >= 1:
+    test2(n)
+    n = n div 2
 
-  test3()
+test3()