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近些年以來 dlang 版本發布節奏穩健，編譯器更新越來越實用，這個版本附帶了上下文感知斷言消息、較低的 GC 內存使用方式、精確的 GC、對鏈接自定義 GC 的支持、大量的 Objective-C 混編改進，以及對 DUB 的工具鏈需求。這次發布也結束了對 OSX-32 的官方支持。

DMD 編譯器改進：

Add support for Objective-C classes

Add support for Objective-C instance variable

Add support for Objective-C super calls

Deprecate Objective-C interfaces

Context-aware assertion error messages

Avoid calling the struct constructor from const-casts

dmd now supports expressive diagnostic error messages with -verrors=context

memcmp() compares are no longer performed for struct equality tests, memberwise comparisons are done instead, per the spec

OSX 32-bit is no longer supported

-preview and -revert command line switches have been introduced

Transition to C++11 character types

Runtime 運行時改進：

Added GC.profileStats() to core.memory

Added core.stdcpp.new_

Added core.sys.linux.sched.CPU_COUNT.

Added core.sys.linux.sched.CPU_ISSET.

Moved std.conv.emplace, std.algorithm.mutation.move, std.algorithm.mutation.moveEmplace, and std.functional.forward to core/lifetime.d

GC cleanup can now be configured as a DRT GC option

A garbage collector with precise heap scanning can now be selected

GC.realloc is now more consistent and robust

User supplied garbage collectors can now be linked with the runtime

Added core.stdcpp.allocator

char/wchar fields in most D runtime (core.* and rt.*) structs are now zero-initialized

包管理器 dub 改進：

dub fetch now supports <package>@<version> as a shortcut

extraDependencyFiles attribute added

File system supplier enabled

toolchainRequirements recipe entry

Dlang 官方完整的發行細節說明：

https://dlang.org/changelog/2.085.0.html

總結

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