From ff7b83f2662f20e9b34d6a5a6872cba35c06d0fd Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Sat, 23 Nov 2024 20:39:26 +0800
Subject: [PATCH] adds a test case (#24469)

closes #13945

(cherry picked from commit af3181e75b55f0246b0c46b9ec23613d3a0c06f4)
---
 tests/misc/tsizeof.nim | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/tests/misc/tsizeof.nim b/tests/misc/tsizeof.nim
index ce53346647..65756bbce7 100644
--- a/tests/misc/tsizeof.nim
+++ b/tests/misc/tsizeof.nim
@@ -740,3 +740,39 @@ type
 
 doAssert sizeof(ChunkObj) == 1
 doAssert offsetOf(ChunkObj, data) == 1
+
+
+block: # bug #13945
+  template c_sizeof(T: typedesc): int =
+    block:
+      # proc needed pending https://github.com/nim-lang/Nim/issues/13943 D20200409T215527
+      proc fun2(): int =
+        {.emit:[result," = sizeof(", T, ");"].}
+      fun2()
+
+  macro test(body: untyped): untyped =
+    result = newStmtList()
+    for T in body:
+      result.add quote do:
+        let s1 = `T`.sizeof
+        let s2 = `T`.c_sizeof
+        doAssert s1 == s2
+
+  type FooEmpty = object
+  const N = 10
+  type FooEmptyArr = array[N, FooEmpty]
+  type Bar = object
+    x: FooEmpty
+    y: cint
+
+  type BarTup = (FooEmpty, cint)
+  type BarTup2 = (().type, cint)
+
+  test:
+    FooEmpty
+    FooEmptyArr
+    Bar
+    BarTup
+    BarTup2
+
+