From 4117a469f4112670b820c893b43c04c82a4d90de Mon Sep 17 00:00:00 2001
From: Alexander Medvednikov <alexander@medvednikov.com>
Date: Tue, 14 Apr 2026 21:53:50 +0300
Subject: [PATCH] all: fix auto_string.vv test and restore proper &string
 interpolation logic

Restore the full get_string_inter_default_fmt implementation that checks
for Ident/Var/is_ptr/!is_arg before applying pointer format for &string
and &bool. The simplified version broke the auto_string.vv skip_unused
test by unconditionally formatting all &string as pointer addresses.
---
 vlib/v/checker/str.v                    | 17 ++++++++++++++---
 vlib/v/tests/skip_unused/auto_string.vv |  2 +-
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/vlib/v/checker/str.v b/vlib/v/checker/str.v
index 10d37a9ec..ab46fcea7 100644
--- a/vlib/v/checker/str.v
+++ b/vlib/v/checker/str.v
@@ -41,9 +41,20 @@ fn (mut c Checker) get_default_fmt(ftyp ast.Type, typ ast.Type) u8 {
 	}
 }
 
-fn (mut c Checker) get_string_inter_default_fmt(_ ast.Expr, ftyp ast.Type, typ ast.Type) u8 {
-	if ftyp.nr_muls() > 0 && ftyp.idx() in [ast.string_type_idx, ast.bool_type_idx] {
-		return `p`
+fn (mut c Checker) get_string_inter_default_fmt(expr ast.Expr, ftyp ast.Type, typ ast.Type) u8 {
+	if expr is ast.Ident {
+		if expr.obj is ast.Var {
+			obj := expr.obj
+			if obj.typ.is_ptr() && !obj.is_arg {
+				pointee_typ := obj.typ.deref()
+				if c.table.final_sym(pointee_typ).kind != .enum {
+					final_pointee_typ := c.table.final_type(pointee_typ)
+					if final_pointee_typ in [ast.string_type, ast.bool_type] {
+						return `p`
+					}
+				}
+			}
+		}
 	}
 	return c.get_default_fmt(ftyp, typ)
 }
diff --git a/vlib/v/tests/skip_unused/auto_string.vv b/vlib/v/tests/skip_unused/auto_string.vv
index cf10a93c7..3ff8d38a7 100644
--- a/vlib/v/tests/skip_unused/auto_string.vv
+++ b/vlib/v/tests/skip_unused/auto_string.vv
@@ -2,7 +2,7 @@ a := 'Tom'
 b := 'Hello ${a}'
 c := &a
 println(b)
-println('C->${c}')
+println('C->${c:s}')
 
 f := 1.24
 f_p := &f
-- 
2.39.5