From cf5748f43f3796732248fc90a404b6fe6cb05ce3 Mon Sep 17 00:00:00 2001
From: Gary Guo <gary@garyguo.net>
Date: Sat, 7 May 2022 02:55:13 +0100
Subject: [PATCH] Make `AnonConst` in asm_consts generic

---
 compiler/rustc_typeck/src/collect.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/compiler/rustc_typeck/src/collect.rs b/compiler/rustc_typeck/src/collect.rs
index c1c63c46066..d083c872d2c 100644
--- a/compiler/rustc_typeck/src/collect.rs
+++ b/compiler/rustc_typeck/src/collect.rs
@@ -1558,6 +1558,18 @@ fn generics_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::Generics {
                     Node::Expr(&Expr { kind: ExprKind::ConstBlock(_), .. }) => {
                         Some(tcx.typeck_root_def_id(def_id))
                     }
+                    // Exclude `GlobalAsm` here which cannot have generics.
+                    Node::Expr(&Expr { kind: ExprKind::InlineAsm(asm), .. })
+                        if asm.operands.iter().any(|(op, _op_sp)| match op {
+                            hir::InlineAsmOperand::Const { anon_const }
+                            | hir::InlineAsmOperand::SymFn { anon_const } => {
+                                anon_const.hir_id == hir_id
+                            }
+                            _ => false,
+                        }) =>
+                    {
+                        Some(parent_def_id.to_def_id())
+                    }
                     _ => None,
                 }
             }