Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

[gdb/build, c++20] Handle deprecated std::allocator::construct

Browse Source 
When building gdb with -std=c++20, I run into:
...
gdbsupport/default-init-alloc.h:52:12: error: ‘construct’ has not been \
  declared in ‘class std::allocator<unsigned char>’
   52 |   using A::construct;
      |            ^~~~~~~~~
...

Indeed, std::allocator::construct has been deprecated in c++17 and removed in
c++20.

Fix this by using instead std::pmr::polymorphic_allocator for c++20.

Tested on x86_64-linux.
This commit is contained in:
Tom de Vries
2023-08-17 10:41:34 +02:00
parent 9246b7bd6d
commit 6feae66da1
1 changed files with 12 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
gdbsupport/default-init-alloc.h
View File

@@ -18,6 +18,10 @@
#ifndef COMMON_DEFAULT_INIT_ALLOC_H #ifndef COMMON_DEFAULT_INIT_ALLOC_H
#define COMMON_DEFAULT_INIT_ALLOC_H #define COMMON_DEFAULT_INIT_ALLOC_H
#if __cplusplus >= 202002L
#include <memory_resource>
#endif
namespace gdb { namespace gdb {
/* An allocator that default constructs using default-initialization /* An allocator that default constructs using default-initialization
@@ -29,7 +33,14 @@ namespace gdb {
adapter that given an allocator A, overrides 'A::construct()'. 'A' adapter that given an allocator A, overrides 'A::construct()'. 'A'
defaults to std::allocator<T>. */ defaults to std::allocator<T>. */
template<typename T, typename A = std::allocator<T>> template<typename T,
typename A
#if __cplusplus >= 202002L
= std::pmr::polymorphic_allocator<T>
#else
= std::allocator<T>
#endif
>
class default_init_allocator : public A class default_init_allocator : public A
{ {
public: public: