From 3d25b5c7e8653a4ce0513cf8d7bcbd796ed81c4b Mon Sep 17 00:00:00 2001
From: yukang <moorekang@gmail.com>
Date: Fri, 4 Aug 2023 13:28:04 +0800
Subject: [PATCH] Fix ICE failed to get layout for ReferencesError

---
 .../rustc_codegen_cranelift/src/common.rs     |  2 +-
 compiler/rustc_codegen_gcc/src/context.rs     |  2 +-
 compiler/rustc_codegen_llvm/src/context.rs    |  2 +-
 .../invalid/issue-114435-layout-type-err.rs   | 44 +++++++++++++++++++
 .../issue-114435-layout-type-err.stderr       |  8 ++++
 5 files changed, 55 insertions(+), 3 deletions(-)
 create mode 100644 tests/ui/invalid/issue-114435-layout-type-err.rs
 create mode 100644 tests/ui/invalid/issue-114435-layout-type-err.stderr

diff --git a/compiler/rustc_codegen_cranelift/src/common.rs b/compiler/rustc_codegen_cranelift/src/common.rs
index 67ea20112fe33..3081dcfa2b7a3 100644
--- a/compiler/rustc_codegen_cranelift/src/common.rs
+++ b/compiler/rustc_codegen_cranelift/src/common.rs
@@ -477,7 +477,7 @@ impl<'tcx> LayoutOfHelpers<'tcx> for RevealAllLayoutCx<'tcx> {
 
     #[inline]
     fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
-        if let layout::LayoutError::SizeOverflow(_) = err {
+        if let LayoutError::SizeOverflow(_) | LayoutError::ReferencesError(_) = err {
             self.0.sess.span_fatal(span, err.to_string())
         } else {
             span_bug!(span, "failed to get layout for `{}`: {}", ty, err)
diff --git a/compiler/rustc_codegen_gcc/src/context.rs b/compiler/rustc_codegen_gcc/src/context.rs
index 08507e19652b4..88dcafa7370e5 100644
--- a/compiler/rustc_codegen_gcc/src/context.rs
+++ b/compiler/rustc_codegen_gcc/src/context.rs
@@ -476,7 +476,7 @@ impl<'gcc, 'tcx> LayoutOfHelpers<'tcx> for CodegenCx<'gcc, 'tcx> {
 
     #[inline]
     fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
-        if let LayoutError::SizeOverflow(_) = err {
+        if let LayoutError::SizeOverflow(_) | LayoutError::ReferencesError(_) = err {
             self.sess().emit_fatal(respan(span, err.into_diagnostic()))
         } else {
             span_bug!(span, "failed to get layout for `{}`: {}", ty, err)
diff --git a/compiler/rustc_codegen_llvm/src/context.rs b/compiler/rustc_codegen_llvm/src/context.rs
index cb093996d1d09..3577fb2d951ba 100644
--- a/compiler/rustc_codegen_llvm/src/context.rs
+++ b/compiler/rustc_codegen_llvm/src/context.rs
@@ -985,7 +985,7 @@ impl<'tcx> LayoutOfHelpers<'tcx> for CodegenCx<'_, 'tcx> {
 
     #[inline]
     fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! {
-        if let LayoutError::SizeOverflow(_) = err {
+        if let LayoutError::SizeOverflow(_) | LayoutError::ReferencesError(_) = err {
             self.sess().emit_fatal(Spanned { span, node: err.into_diagnostic() })
         } else {
             span_bug!(span, "failed to get layout for `{ty}`: {err:?}")
diff --git a/tests/ui/invalid/issue-114435-layout-type-err.rs b/tests/ui/invalid/issue-114435-layout-type-err.rs
new file mode 100644
index 0000000000000..a2d405936875f
--- /dev/null
+++ b/tests/ui/invalid/issue-114435-layout-type-err.rs
@@ -0,0 +1,44 @@
+// build-fail
+// compile-flags: --crate-type lib -Cdebuginfo=2
+// error-pattern: the type has an unknown layout
+
+#![recursion_limit = "10"]
+macro_rules! link {
+    ($outer:ident, $inner:ident) => {
+        struct $outer($inner);
+        impl $outer {
+            fn new() -> $outer {
+                $outer($inner::new())
+            }
+        }
+        impl std::ops::Deref for $outer {
+            type Target = $inner;
+            fn deref(&self) -> &$inner {
+                &self.0
+            }
+        }
+    };
+}
+
+struct Bottom;
+
+impl Bottom {
+    fn new() -> Bottom {
+        Bottom
+    }
+}
+
+
+link!(A, B);
+link!(B, C);
+link!(C, D);
+link!(D, E);
+link!(E, F);
+link!(F, G);
+link!(G, H);
+link!(H, I);
+link!(I, J);
+link!(J, K);
+link!(K, Bottom);
+
+fn main() { }
diff --git a/tests/ui/invalid/issue-114435-layout-type-err.stderr b/tests/ui/invalid/issue-114435-layout-type-err.stderr
new file mode 100644
index 0000000000000..a2db74ff8bd8e
--- /dev/null
+++ b/tests/ui/invalid/issue-114435-layout-type-err.stderr
@@ -0,0 +1,8 @@
+error: reached the recursion limit finding the struct tail for `Bottom`
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "20"]`
+
+error: the type has an unknown layout
+
+error: aborting due to 2 previous errors
+