2 files changed, 15 insertions, 6 deletions
diff --git a/tests/ui/macros/cfg_select.rs b/tests/ui/macros/cfg_select.rs
index a4d94836a09..461d2e0e8c1 100644
--- a/tests/ui/macros/cfg_select.rs
+++ b/tests/ui/macros/cfg_select.rs
@@ -18,10 +18,13 @@ fn arm_rhs_must_be_in_braces() -> i32 {
 cfg_select! {
     _ => {}
     true => {}
-    //~^ WARN unreachable rule
+    //~^ WARN unreachable predicate
 }
 
 cfg_select! {
-    //~^ ERROR none of the rules in this `cfg_select` evaluated to true
+    //~^ ERROR none of the predicates in this `cfg_select` evaluated to true
     false => {}
 }
+
+cfg_select! {}
+//~^ ERROR none of the predicates in this `cfg_select` evaluated to true
diff --git a/tests/ui/macros/cfg_select.stderr b/tests/ui/macros/cfg_select.stderr
index fef5e95a6bc..6c18a7c189d 100644
--- a/tests/ui/macros/cfg_select.stderr
+++ b/tests/ui/macros/cfg_select.stderr
@@ -4,15 +4,15 @@ error: expected `{`, found `1`
 LL |         true => 1
    |                 ^ expected `{`
 
-warning: unreachable rule
+warning: unreachable predicate
   --> $DIR/cfg_select.rs:20:5
    |
 LL |     _ => {}
    |     - always matches
 LL |     true => {}
-   |     ^^^^ this rules is never reached
+   |     ^^^^ this predicate is never reached
 
-error: none of the rules in this `cfg_select` evaluated to true
+error: none of the predicates in this `cfg_select` evaluated to true
   --> $DIR/cfg_select.rs:24:1
    |
 LL | / cfg_select! {
@@ -21,5 +21,11 @@ LL | |     false => {}
 LL | | }
    | |_^
 
-error: aborting due to 2 previous errors; 1 warning emitted
+error: none of the predicates in this `cfg_select` evaluated to true
+  --> $DIR/cfg_select.rs:29:1
+   |
+LL | cfg_select! {}
+   | ^^^^^^^^^^^^^^
+
+error: aborting due to 3 previous errors; 1 warning emitted