Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/test/ui/consts/const-extern-fn/feature-gate-const_extern_fn.rs b/src/test/ui/consts/const-extern-fn/feature-gate-const_extern_fn.rs
new file mode 100644
index 000000000..f7bed91b0
--- /dev/null
+++ b/src/test/ui/consts/const-extern-fn/feature-gate-const_extern_fn.rs
@@ -0,0 +1,13 @@
+// Check that `const extern fn` and `const unsafe extern fn` are feature-gated
+// for certain ABIs.
+
+const extern fn foo1() {}
+const extern "C" fn foo2() {}
+const extern "Rust" fn foo3() {}
+const extern "cdecl" fn foo4() {} //~ ERROR `cdecl` as a `const fn` ABI is unstable
+const unsafe extern fn bar1() {}
+const unsafe extern "C" fn bar2() {}
+const unsafe extern "Rust" fn bar3() {}
+const unsafe extern "cdecl" fn bar4() {} //~ ERROR `cdecl` as a `const fn` ABI is unstable
+
+fn main() {}