1 files changed, 49 insertions, 0 deletions
diff --git a/tests/ui/feature-gates/feature-gate-cfg-version.rs b/tests/ui/feature-gates/feature-gate-cfg-version.rs
new file mode 100644
index 000000000..e35784a68
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-cfg-version.rs
@@ -0,0 +1,49 @@
+#[cfg(version(42))] //~ ERROR: expected a version literal
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn foo() {}
+#[cfg(version(1.20))] //~ ERROR: expected a version literal
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn foo() -> bool { true }
+#[cfg(version("1.44"))]
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn foo() -> bool { true }
+#[cfg(not(version("1.44")))]
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn foo() -> bool { false }
+
+#[cfg(version("1.43", "1.44", "1.45"))] //~ ERROR: expected single version literal
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version(false))] //~ ERROR: expected a version literal
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("foo"))] //~ WARNING: unknown version literal format
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("999"))] //~ WARNING: unknown version literal format
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("-1"))] //~ WARNING: unknown version literal format
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("65536"))] //~ WARNING: unknown version literal format
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("0"))] //~ WARNING: unknown version literal format
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool { true }
+#[cfg(version("1.0"))]
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool { true }
+#[cfg(version("1.65536.2"))] //~ WARNING: unknown version literal format
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("1.20.0-stable"))] //~ WARNING: unknown version literal format
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() {}
+
+fn main() {
+    assert!(foo());
+    assert!(bar());
+    assert!(cfg!(version("1.42"))); //~ ERROR `cfg(version)` is experimental and subject to change
+}