[binutils-gdb] gdb: remove move constructor and move assignment operator from cooked_index

[Simon Marchi <simark@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=df4397e378fa6813301e80c08fd1358aa07697df

commit df4397e378fa6813301e80c08fd1358aa07697df
Author: Simon Marchi <simon.marchi@polymtl.ca>
Date:   Thu Apr 14 11:32:34 2022 -0400

    gdb: remove move constructor and move assignment operator from cooked_index
    
    Building with clang++-14, I see:
    
          CXX    dwarf2/cooked-index.o
        In file included from /home/smarchi/src/binutils-gdb/gdb/dwarf2/cooked-index.c:21:
        /home/smarchi/src/binutils-gdb/gdb/dwarf2/cooked-index.h:172:12: error: explicitly defaulted move constructor is implicitly deleted [-Werror,-Wdefaulted-function-deleted]
          explicit cooked_index (cooked_index &&other) = default;
                   ^
        /home/smarchi/src/binutils-gdb/gdb/dwarf2/cooked-index.h:225:16: note: move constructor of 'cooked_index' is implicitly deleted because field 'm_storage' has a deleted move constructor
          auto_obstack m_storage;
                       ^
        /home/smarchi/src/binutils-gdb/gdb/../gdbsupport/gdb_obstack.h:128:28: note: 'auto_obstack' has been explicitly marked deleted here
          DISABLE_COPY_AND_ASSIGN (auto_obstack);
                                   ^
        In file included from /home/smarchi/src/binutils-gdb/gdb/dwarf2/cooked-index.c:21:
        /home/smarchi/src/binutils-gdb/gdb/dwarf2/cooked-index.h:174:17: error: explicitly defaulted move assignment operator is implicitly deleted [-Werror,-Wdefaulted-function-deleted]
          cooked_index &operator= (cooked_index &&other) = default;
                        ^
        /home/smarchi/src/binutils-gdb/gdb/dwarf2/cooked-index.h:225:16: note: move assignment operator of 'cooked_index' is implicitly deleted because field 'm_storage' has a deleted move assignment operator
          auto_obstack m_storage;
                       ^
        /home/smarchi/src/binutils-gdb/gdb/../gdbsupport/gdb_obstack.h:128:3: note: 'operator=' has been explicitly marked deleted here
          DISABLE_COPY_AND_ASSIGN (auto_obstack);
          ^
        /home/smarchi/src/binutils-gdb/gdb/../include/ansidecl.h:425:8: note: expanded from macro 'DISABLE_COPY_AND_ASSIGN'
          void operator= (const TYPE &) = delete
               ^
    
    We explicitly make cooked_index have a default move constructor and
    move assignment operator.  But it doesn't actually happen because
    cooked_index has a field of type auto_obstack, which isn't movable.
    We don't actually need cooked_index to be movable at the moment, so
    remove those lines.
    
    Change-Id: Ifc1fe3d7d67e3ae1a14363d6c1869936fe80b0a2

Diff:
---
 gdb/dwarf2/cooked-index.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/gdb/dwarf2/cooked-index.h b/gdb/dwarf2/cooked-index.h
index 661664d9f84..4b52eaf93d0 100644
--- a/gdb/dwarf2/cooked-index.h
+++ b/gdb/dwarf2/cooked-index.h
@@ -169,9 +169,7 @@ class cooked_index
 {
 public:
   cooked_index () = default;
-  explicit cooked_index (cooked_index &&other) = default;
   DISABLE_COPY_AND_ASSIGN (cooked_index);
-  cooked_index &operator= (cooked_index &&other) = default;
 
   /* Create a new cooked_index_entry and register it with this object.
      Entries are owned by this object.  The new item is returned.  */