2 files changed, 121 insertions, 0 deletions
diff --git a/src/test/ui/feature-gates/feature-gate-cfg-version.rs b/src/test/ui/feature-gates/feature-gate-cfg-version.rs
new file mode 100644
index 00000000000..71b82b7f749
--- /dev/null
+++ b/src/test/ui/feature-gates/feature-gate-cfg-version.rs
@@ -0,0 +1,28 @@
+#[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 string literal
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version(false))] //~ ERROR: expected string literal
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("foo"))] //~ ERROR: invalid version string
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("999"))]
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool  { false }
+#[cfg(version("0"))]
+//~^ ERROR `cfg(version)` is experimental and subject to change
+fn bar() -> bool { true }
+
+fn main() {
+    assert!(foo());
+    assert!(bar());
+    assert!(cfg!(version("1.42"))); //~ ERROR `cfg(version)` is experimental and subject to change
+}
diff --git a/src/test/ui/feature-gates/feature-gate-cfg-version.stderr b/src/test/ui/feature-gates/feature-gate-cfg-version.stderr
new file mode 100644
index 00000000000..48686dd4aeb
--- /dev/null
+++ b/src/test/ui/feature-gates/feature-gate-cfg-version.stderr
@@ -0,0 +1,93 @@
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:1:7
+   |
+LL | #[cfg(version("1.44"))]
+   |       ^^^^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:4:11
+   |
+LL | #[cfg(not(version("1.44")))]
+   |           ^^^^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:8:7
+   |
+LL | #[cfg(version("1.43", "1.44", "1.45"))]
+   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error: expected single string literal
+  --> $DIR/feature-gate-cfg-version.rs:8:7
+   |
+LL | #[cfg(version("1.43", "1.44", "1.45"))]
+   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:11:7
+   |
+LL | #[cfg(version(false))]
+   |       ^^^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error: expected string literal
+  --> $DIR/feature-gate-cfg-version.rs:11:15
+   |
+LL | #[cfg(version(false))]
+   |               ^^^^^
+
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:14:7
+   |
+LL | #[cfg(version("foo"))]
+   |       ^^^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error: invalid version string
+  --> $DIR/feature-gate-cfg-version.rs:14:15
+   |
+LL | #[cfg(version("foo"))]
+   |               ^^^^^
+
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:17:7
+   |
+LL | #[cfg(version("999"))]
+   |       ^^^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:20:7
+   |
+LL | #[cfg(version("0"))]
+   |       ^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error[E0658]: `cfg(version)` is experimental and subject to change
+  --> $DIR/feature-gate-cfg-version.rs:27:18
+   |
+LL |     assert!(cfg!(version("1.42")));
+   |                  ^^^^^^^^^^^^^^^
+   |
+   = note: see issue #64796 <https://github.com/rust-lang/rust/issues/64796> for more information
+   = help: add `#![feature(cfg_version)]` to the crate attributes to enable
+
+error: aborting due to 11 previous errors
+
+For more information about this error, try `rustc --explain E0658`.