Add regression test for rust-lang#100772

Signed-off-by: Yuki Okushi <jtitor@2k36.org>

Author: JohnTitor

src/test/ui/lto/issue-100772.rs

@@ -0,0 +1,11 @@
+// run-pass
+// needs-sanitizer-cfi
+// compile-flags: -Clto -Ctarget-feature=-crt-static -Zsanitizer=cfi
+// no-prefer-dynamic
+// only-x86_64-unknown-linux-gnu
+
+#![feature(allocator_api)]
+
+fn main() {
+    let _ = Box::new_in(&[0, 1], &std::alloc::Global);
+}