1 files changed, 3 insertions, 0 deletions

diff --git a/lib/dump.lua b/lib/dump.lua
index 5c127ae9..fdb28833 100644
--- a/lib/dump.lua
+++ b/lib/dump.lua
@@ -295,6 +295,9 @@ local function formatk(tr, idx)
       s = format("[%p]", k)
       if s == "[0x00000000]" then s = "NULL" end
     end
+  elseif t == 21 then -- int64_t
+    s = sub(tostring(k), 1, -3)
+    if sub(s, 1, 1) ~= "-" then s = "+"..s end
   else
     s = tostring(k) -- For primitives.
   end