From: Yuki OKUSHI <huyuumi.dev@gmail.com>
Date: Mon, 15 Apr 2019 22:32:19 +0000 (+0900)
Subject: Make wording verbose
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=dce86f9dd53a81487cd0914c59ec8f012473717d;p=rust.git

Make wording verbose
---

diff --git a/src/librustc_mir/transform/qualify_min_const_fn.rs b/src/librustc_mir/transform/qualify_min_const_fn.rs
index 5cea8ba2714..7826d3da4fe 100644
--- a/src/librustc_mir/transform/qualify_min_const_fn.rs
+++ b/src/librustc_mir/transform/qualify_min_const_fn.rs
@@ -326,7 +326,12 @@ fn check_terminator(
                     abi::Abi::Rust if tcx.is_min_const_fn(def_id) => {},
                     abi::Abi::Rust => return Err((
                         span,
-                        "can only call other `const` within a `const`".into(),
+                        format!(
+                            "can only call other `const fn` within a `const fn`, \
+                             but `{:?}` is not stable as `const fn`",
+                            func,
+                        )
+                        .into(),
                     )),
                     abi => return Err((
                         span,