1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/check-cfg/unknown-values.rs b/tests/ui/check-cfg/unknown-values.rs
new file mode 100644
index 000000000..c082a2f25
--- /dev/null
+++ b/tests/ui/check-cfg/unknown-values.rs
@@ -0,0 +1,17 @@
+// Check that no warning is emitted for unknown cfg value
+//
+// check-pass
+// revisions: simple mixed with_values
+// compile-flags: -Z unstable-options
+// compile-flags: --check-cfg=cfg(simple,mixed,with_values)
+// [simple]compile-flags: --check-cfg=cfg(foo,values(any()))
+// [mixed]compile-flags: --check-cfg=cfg(foo) --check-cfg=cfg(foo,values(any()))
+// [with_values]compile-flags:--check-cfg=cfg(foo,values(any())) --check-cfg=cfg(foo,values("aa"))
+
+#[cfg(foo = "value")]
+pub fn f() {}
+
+#[cfg(foo)]
+pub fn f() {}
+
+fn main() {}