Rollup merge of #145368 - rcvalle:rust-cfi-fix-142284, r=dianqk

CFI: Make `lto` and `linker-plugin-lto` work the same for `compiler_builtins`

Fix rust-lang/rust#142284 by ensuring that `#![no_builtins]` crates can still emit bitcode when proper (i.e., non-rustc) LTO (i.e., -Clinker-plugin-lto) is used.

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/ui/sanitizer/cfi/no_builtins.rs b/tests/ui/sanitizer/cfi/no_builtins.rs
new file mode 100644
index 00000000000..949057689ab
--- /dev/null
+++ b/tests/ui/sanitizer/cfi/no_builtins.rs
@@ -0,0 +1,22 @@
+// Verifies that `#![no_builtins]` crates can be built with linker-plugin-lto and CFI.
+// See Issue #142284
+//
+//@ needs-sanitizer-cfi
+//@ compile-flags: -Clinker-plugin-lto -Copt-level=0 -Zsanitizer=cfi -Ctarget-feature=-crt-static
+//@ compile-flags: --crate-type rlib
+//@ build-pass
+
+#![no_builtins]
+#![no_std]
+
+pub static FUNC: fn() = initializer;
+
+pub fn initializer() {
+    call(fma_with_fma);
+}
+
+pub fn call(fn_ptr: fn()) {
+    fn_ptr();
+}
+
+pub fn fma_with_fma() {}