D语言(Dlang)是由Digital Mars公司开发的编程语言，起因是为了改进C＋＋。它与C二进制兼容（不完全），可编译为本地码，有GC也可手动管理内存，语法上借鉴多种语言，模板则 在C＋＋的基础上做了相当大的扩充。D 语言既有 C 语言的强大威力，又有 Python 和 Ruby 的开发效率。它是一种集垃圾回收、手工内存操作、契约式设计、高级模板技术、内嵌汇编、内置单元测试、Mixin 风格多继承、类 Java 包管理机制、内置同步机制、内建基本运行时信息的系统级编程语言。

本次更新主要是针对上个月发布的 2.085.0 大版本进行更新，修复了 20+ 处问题。

详细更新列表如下：

DMD 编译器回归改进

1. Bugzilla 19655: DMD generates wrong code for some circular dependencies
2. Bugzilla 19656: D compiler fails to resolve circular module dependency when modules are compiled separately
3. Bugzilla 19657: D compiler fails to resolve circular module dependency when modules are compiled together
4. Bugzilla 19691: ICE on null default value for struct parameter in constructor
5. Bugzilla 19718: DMD 2.085 changes to gsroa make DCD crashing
6. Bugzilla 19724: Regression: wrong order of linker arguments, again: -L-l before -L--start-group
7. Bugzilla 19730: if (auto x) {} isn't properly rejected
8. Bugzilla 19746: DMD fails to compile some circular dependencies spiced with is (T == super) condition
9. Bugzilla 19750: [Reg v2.070.2] DMD fails with some circular module refs with Template/Mixin instances

DMD 编译器 BUG 修复

1. Bugzilla 13285: wrong codegen for destructor call of unnamed struct instance on 64 bit environments
2. Bugzilla 15875: case of undetected circular reference in function parameter
3. Bugzilla 17259: ICE with multiple mixin templates containing conflicting ctor declarations
4. Bugzilla 17285: Segfault when types are used in array literals
5. Bugzilla 17290: DMD crash due to circular reference in function return type
6. Bugzilla 19635: -checkaction=context not working with attributes
7. Bugzilla 19700: [2.085.0-beta.2] Obj-C wrong code overloading selectors and extern(D)
8. Bugzilla 19717: case of segfault due to undetected forward reference
9. Bugzilla 19755: Compiler crash
10. Bugzilla 19757: crash on invalid initializer at CTFE
11. Bugzilla 19762: ICE on invalid code

Phobos 标准库回归改进

1. Bugzilla 18818: VariantN has unittests that are compiled into user modules

Phobos 标准库 BUG 修复

1. Bugzilla 19765: std.algorithm.searching.findAmong doesn't save like it should

DRuntime 运行时修复

1. Bugzilla 19723: wrong time values in GC.profileStats

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