From 6314bd72db4badf597b584b33a00967cc7f590f1 Mon Sep 17 00:00:00 2001
From: Tony Kan <tianchengkan@gmail.com>
Date: Wed, 18 Feb 2026 21:52:42 -0800
Subject: [PATCH 1/2] fix(codegen): Use `body_codegen_attrs` for caller in
 `adjust_target_feature_sig`

---
 compiler/rustc_middle/src/ty/context.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs
index 94a77ce13c14a..469ad8913a310 100644
--- a/compiler/rustc_middle/src/ty/context.rs
+++ b/compiler/rustc_middle/src/ty/context.rs
@@ -1330,8 +1330,8 @@ impl<'tcx> TyCtxt<'tcx> {
         caller: DefId,
     ) -> Option<ty::Binder<'tcx, ty::FnSig<'tcx>>> {
         let fun_features = &self.codegen_fn_attrs(fun_def).target_features;
-        let callee_features = &self.codegen_fn_attrs(caller).target_features;
-        if self.is_target_feature_call_safe(&fun_features, &callee_features) {
+        let caller_features = &self.body_codegen_attrs(caller).target_features;
+        if self.is_target_feature_call_safe(&fun_features, &caller_features) {
             return Some(fun_sig.map_bound(|sig| ty::FnSig { safety: hir::Safety::Safe, ..sig }));
         }
         None

From 034f7f058a0ae2a18e7775c7c05982af99fac13b Mon Sep 17 00:00:00 2001
From: Tony Kan <tianchengkan@gmail.com>
Date: Wed, 18 Feb 2026 21:52:55 -0800
Subject: [PATCH 2/2] test(codegen): Add regression test for issue #152340

---
 .../const-target-feature-fn-ptr-coercion.rs   | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 tests/ui/target-feature/const-target-feature-fn-ptr-coercion.rs

diff --git a/tests/ui/target-feature/const-target-feature-fn-ptr-coercion.rs b/tests/ui/target-feature/const-target-feature-fn-ptr-coercion.rs
new file mode 100644
index 0000000000000..380de2412b728
--- /dev/null
+++ b/tests/ui/target-feature/const-target-feature-fn-ptr-coercion.rs
@@ -0,0 +1,33 @@
+//@ only-x86_64
+//@ check-pass
+//
+// Regression test for <https://github.com/rust-lang/rust/issues/152340>.
+
+#![allow(dead_code)]
+
+#[target_feature(enable = "sse2")]
+const fn foo() {}
+
+// DefKind::Const
+const _: () = unsafe {
+    let _: unsafe fn() = foo;
+};
+
+// DefKind::AssocConst
+struct S;
+impl S {
+    const C: () = unsafe {
+        let _: unsafe fn() = foo;
+    };
+}
+
+// DefKind::InlineConst
+fn bar() {
+    let _ = const {
+        unsafe {
+            let _: unsafe fn() = foo;
+        }
+    };
+}
+
+fn main() {}