Auto merge of #110214 - compiler-errors:rollup-mkig4t6, r=compiler-errors

Rollup of 10 pull requests

Successful merges:

 - #96971 (Initial support for loongarch64-unknown-linux-gnu)
 - #109894 (Remove Errors section from var_os docs)
 - #110000 (Rename tests/ui/unique to tests/ui/box/unit)
 - #110018 (Pass host linker to compiletest.)
 - #110104 ( Reword the docstring in todo! macro definition, fixing a typo)
 - #110113 (Fix `x test ui --target foo` when download-rustc is enabled)
 - #110126 (Support safe transmute in new solver)
 - #110155 (Fix typos in librustdoc, tools and config files)
 - #110162 (rustdoc: remove redundant expandSection code from main.js)
 - #110173 (kmc-solid: Implement `Socket::read_buf`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 3 insertions, 0 deletions

diff --git a/compiler/rustc_middle/src/ty/visit.rs b/compiler/rustc_middle/src/ty/visit.rs
index 6814cadb9a8..08a62c900f9 100644
--- a/compiler/rustc_middle/src/ty/visit.rs
+++ b/compiler/rustc_middle/src/ty/visit.rs
@@ -83,6 +83,9 @@ pub trait TypeVisitableExt<'tcx>: TypeVisitable<TyCtxt<'tcx>> {
                 | TypeFlags::HAS_CT_PLACEHOLDER,
         )
     }
+    fn has_non_region_placeholders(&self) -> bool {
+        self.has_type_flags(TypeFlags::HAS_TY_PLACEHOLDER | TypeFlags::HAS_CT_PLACEHOLDER)
+    }
     fn needs_subst(&self) -> bool {
         self.has_type_flags(TypeFlags::NEEDS_SUBST)
     }