From d5be91799403c9ba9ee526d9760b07f232f91f2d Mon Sep 17 00:00:00 2001
From: Bung <crc32@qq.com>
Date: Tue, 1 Nov 2022 12:58:32 +0800
Subject: [PATCH] fix #20272 range of uint64 shows signed upper bound (#20702)

(cherry picked from commit 49e793e8c4b42a5bc08bc6ed27123389c3bdc353)
---
 compiler/types.nim   | 5 ++++-
 tests/misc/t6549.nim | 4 ++++
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 tests/misc/t6549.nim

diff --git a/compiler/types.nim b/compiler/types.nim
index 6217310607..7da1efa1ef 100644
--- a/compiler/types.nim
+++ b/compiler/types.nim
@@ -448,7 +448,10 @@ proc mutateType(t: PType, iter: TTypeMutator, closure: RootRef): PType =
 
 proc valueToString(a: PNode): string =
   case a.kind
-  of nkCharLit..nkUInt64Lit: result = $a.intVal
+  of nkCharLit, nkUIntLit..nkUInt64Lit:
+    result = $cast[uint64](a.intVal)
+  of nkIntLit..nkInt64Lit:
+    result = $a.intVal
   of nkFloatLit..nkFloat128Lit: result = $a.floatVal
   of nkStrLit..nkTripleStrLit: result = a.strVal
   else: result = "<invalid value>"
diff --git a/tests/misc/t6549.nim b/tests/misc/t6549.nim
new file mode 100644
index 0000000000..1d7393318d
--- /dev/null
+++ b/tests/misc/t6549.nim
@@ -0,0 +1,4 @@
+
+const l = $(range[low(uint64) .. high(uint64)])
+const r = "range 0..18446744073709551615(uint64)"
+doAssert l == r