Add test for format_args!("{}", 0) in const.
diff --git a/tests/ui/consts/const-eval/format.rs b/tests/ui/consts/const-eval/format.rs
index 1878fc0..a8085a7 100644
--- a/tests/ui/consts/const-eval/format.rs
+++ b/tests/ui/consts/const-eval/format.rs
@@ -9,4 +9,9 @@ const fn print() {
//~| ERROR cannot call non-const function `_print` in constant functions
}
+const fn format_args() {
+ format_args!("{}", 0);
+ //~^ ERROR cannot call non-const formatting macro in constant functions
+}
+
fn main() {}
diff --git a/tests/ui/consts/const-eval/format.stderr b/tests/ui/consts/const-eval/format.stderr
index e8d7bbc..4c4cbb3 100644
--- a/tests/ui/consts/const-eval/format.stderr
+++ b/tests/ui/consts/const-eval/format.stderr
@@ -24,6 +24,14 @@
= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
= note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
-error: aborting due to 3 previous errors
+error[E0015]: cannot call non-const formatting macro in constant functions
+ --> $DIR/format.rs:13:5
+ |
+LL | format_args!("{}", 0);
+ | ^^^^^^^^^^^^^^^^^^^^^
+ |
+ = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
+
+error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0015`.
