From f0d53008c5f4281797f86ab2b4e0f30610b5379a Mon Sep 17 00:00:00 2001
From: Krchi <997054144@qq.com>
Date: Sat, 13 Dec 2025 21:46:38 +0800
Subject: [PATCH] v.debug: fix struct value initialization of an interface
 field (fix #25941) (fix #25924) (#25946)

---
 vlib/v/debug/tests/interface_var.expect |  7 +++++++
 vlib/v/debug/tests/interface_var.vv     | 17 +++++++++++++++++
 vlib/v/gen/c/cgen.v                     |  2 +-
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/vlib/v/debug/tests/interface_var.expect b/vlib/v/debug/tests/interface_var.expect
index 6eeafa77b..af82dcf82 100644
--- a/vlib/v/debug/tests/interface_var.expect
+++ b/vlib/v/debug/tests/interface_var.expect
@@ -5,5 +5,12 @@ expect "Break on * interface_var in ${test_file}:14\r\n"
 expect "${test_file}:14 vdbg> "
 send "p a\n"
 expect "a = Test{\r\n    a: MySum(true)"
+send "c\n"
+expect "Break on * struct_to_interface_field in ${test_file}:33\r\n"
+expect "${test_file}:33 vdbg> "
+send "p t1\n"
+expect "t1 = Test{\r\n    a: MySum(false)"
+send "p t2\n"
+expect "t2 = Test{\r\n    a: MySum(false)"
 send "q\n"
 expect eof
diff --git a/vlib/v/debug/tests/interface_var.vv b/vlib/v/debug/tests/interface_var.vv
index 6ca7ded01..ae6b53b1e 100644
--- a/vlib/v/debug/tests/interface_var.vv
+++ b/vlib/v/debug/tests/interface_var.vv
@@ -17,6 +17,23 @@ fn interface_var(a ITest) {
 	}
 }
 
+struct MyTest {
+	t ITest
+}
+
+fn struct_to_interface_field() {
+	t1 := Test{}
+	_ := MyTest{
+		t: t1
+	}
+	mut t2 := Test{}
+	_ := MyTest{
+		t: t2
+	}
+	$dbg;
+}
+
 fn main() {
 	interface_var(Test{ a: true })
+	struct_to_interface_field()
 }
diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index a833c11b8..9514d1779 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -4832,7 +4832,7 @@ fn (mut g Gen) debugger_stmt(node ast.DebuggerStmt) {
 							'&'
 						} else if !str_method_expects_ptr && obj.typ.is_ptr() {
 							'*'.repeat(obj.typ.nr_muls())
-						} else if !str_method_expects_ptr && obj_sym.is_heap() {
+						} else if !str_method_expects_ptr && (obj_sym.is_heap() || obj.is_auto_heap) {
 							'*'
 						} else if obj.is_auto_heap && var_typ.is_ptr() && str_method_expects_ptr {
 							'*'
-- 
2.39.5