Initial data commit

Task/Integer-overflow/Nim/integer-overflow-2.nim

@@ -0,0 +1,8 @@
+{.push overflowChecks: off.}
+try:
+  var x: int32 = -2147483647
+  x = -(x - 1)
+  echo x   # -2147483648 — Wrong result as 2147483648 doesn't fit in an int32.
+except OverflowDefect:
+  echo "Overflow detected"      # Not executed.
+{.pop.}