[gcc r17-2224] gccrs: Fix missing copy constructor arguments

https://gcc.gnu.org/g:baa5e752ce291423c4ba3f693e55f138683fa433

commit r17-2224-gbaa5e752ce291423c4ba3f693e55f138683fa433
Author: Philip Herron <[email protected]>
Date:   Sat Apr 18 21:49:40 2026 +0100

    gccrs: Fix missing copy constructor arguments
    
    gcc/rust/ChangeLog:
    
            * typecheck/rust-tyty-bounds.cc (TypeBoundPredicate::TypeBoundPredicate): missing argument
            (TypeBoundPredicate::operator=): likewise
    
    Signed-off-by: Philip Herron <[email protected]>

Diff:
---
 gcc/rust/typecheck/rust-tyty-bounds.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/rust/typecheck/rust-tyty-bounds.cc b/gcc/rust/typecheck/rust-tyty-bounds.cc
index 70e46f3f44bb..79798c7b2420 100644
--- a/gcc/rust/typecheck/rust-tyty-bounds.cc
+++ b/gcc/rust/typecheck/rust-tyty-bounds.cc
@@ -426,7 +426,8 @@ TypeBoundPredicate::TypeBoundPredicate (const TypeBoundPredicate &other)
     }
 
   used_arguments
-    = SubstitutionArgumentMappings (copied_arg_mappings, {},
+    = SubstitutionArgumentMappings (copied_arg_mappings,
+				    other.used_arguments.get_binding_args (),
 				    other.used_arguments.get_regions (),
 				    other.used_arguments.get_locus ());
 }
@@ -467,7 +468,8 @@ TypeBoundPredicate::operator= (const TypeBoundPredicate &other)
     }
 
   used_arguments
-    = SubstitutionArgumentMappings (copied_arg_mappings, {},
+    = SubstitutionArgumentMappings (copied_arg_mappings,
+				    other.used_arguments.get_binding_args (),
 				    other.used_arguments.get_regions (),
 				    other.used_arguments.get_locus ());
   super_traits = other.super_traits;