Revert "Remove #[alloc_error_handler] from the compiler and library"

This reverts commit abc0660118cc95f47445fd33502a11dd448f5968.

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/ui/feature-gates/feature-gate-alloc-error-handler.rs b/tests/ui/feature-gates/feature-gate-alloc-error-handler.rs
new file mode 100644
index 00000000000..78d189d20b6
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-alloc-error-handler.rs
@@ -0,0 +1,16 @@
+// compile-flags:-C panic=abort
+
+#![no_std]
+#![no_main]
+
+use core::alloc::Layout;
+
+#[alloc_error_handler] //~ ERROR use of unstable library feature 'alloc_error_handler'
+fn oom(info: Layout) -> ! {
+    loop {}
+}
+
+#[panic_handler]
+fn panic(_: &core::panic::PanicInfo) -> ! {
+    loop {}
+}