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# Change Log: 2.072.0

Download D 2.072.0
released Oct 30, 2016

#### Language Changes

1. Using the result of a comma expression is deprecated.
2. Implicit catch statement are deprecated.
3. Implicit string concatenation is deprecated.
4. Restrictions of postblits and destructors in union fields have been lifted.
5. Align attribute can be used with CTFEable expression.
6. scope is ignored for value parameters without indirections.

#### Compiler Changes

1. opApply now conservatively allocates a closure unless marked scope
2. Native TLS on OS X 64 bit.
3. Analysis for aliases in imported modules is deferred.
4. Special keyword replaced by the source file's absolute file name.
5. Add -verrors=spec switch.

#### Library Changes

1. TypeInfo.init has been deprecated.
2. New druntime switch --DRT-oncycle allows specifying what to do on cycle detection in modules.
3. Wrong @trusted attributes have been removed from etc.c.curl functions curl_easy_escape, curl_escape, curl_easy_unescape, and curl_unescape.
4. Implementation of MurmurHash digest.
5. Process creation in std.process was sped up on Posix.
6. algorithm.iteration.cumulativeFold was added.
7. std.range.padLeft and std.range.padRight were added.
8. std.regex.regex now supports matching multiple patterns in one go.
9. std.regex.splitter now supports keeping the pattern matches in the resulting range.
10. findLocalMin was added to std.numeric.
11. ptr property and public constructor were added to std.experimental.ndslice.slice.Slice.
12. toHash method was added to std.experimental.ndslice.slice.Slice.
13. slice, shape, ndarray, and other utilities were added to std.experimental.ndslice.slice.
14. as lazy tensor was added to std.experimental.ndslice.slice.
15. iotaSlice lazy tensor was added to std.experimental.ndslice.selection.
16. indexSlice lazy tensor was added to std.experimental.ndslice.selection.
17. repeatSlice lazy tensor was added to std.experimental.ndslice.selection.
18. mapSlice lazy tensor was added to std.experimental.ndslice.selection.
19. partial support for Math Index Order was added to std.experimental.ndslice.slice.Slice.
20. std.algorithm.mutation.swapAt was exposed
21. std.range.iota's .length` property is fixed to size_t instead of the type being iterated
22. std.uni.isNumber and std.uni.isPunctuation now use a separate, optimized path for ASCII inputs.
23. std.uni.isAlphaNum, which is analogous to std.ascii.isAlphaNum was added.
24. std.regex.regex now supports inline comments with (?#...) syntax.
25. std.regex had numerous optimization applied, compile-time std.regex.ctRegex should now be generally faster then the run-time version.
26. std.range.primitives.moveAt accepts only size_t for its index arguments.
27. std.algorithm.sorting.isStrictlyMonotonic which doesn't allow equal values was added.
28. std.file.readLink and std.file.symlink have been rangified.
29. All overloads of std.conv.toImpl has been made private. Please use std.conv.to instead.
30. std.algorithm.searching.{min,max}Element for ranges have been added.
31. std.typecons.Ternary was added to represent three valued logic.
32. Added std.math.quantize, for rounding to the nearest multiple of some number.
33. Three new traits were added to std.traits.
34. std.range.generate fixed to be a proper range.
35. std.numeric no longer uses enforce for verifying contract preconditions.
36. Final was added to std.experimental.typecons
37. std.traits.isInnerClass was added to identify nested classes with an accessible outer pointer
38. std.conv.emplace no longer allows to emplace classes directly nested inside other classes without specifying a suitable outer pointer
39. A switch for selecting the GC implementation at runtime was added.
40. A GC implementation allowing manual memory management was added.

List of all bug fixes and enhancements in D 2.072.0.

#### Language Changes

1. Using the result of a comma expression is deprecated.

   Comma expressions have proven to be a frequent source of confusion, and bugs - see here for examples.

   Using the result of a comma expression will now trigger a deprecation message.

   Example:

       void main () {
         // OK, result of increment not directly used
         for (int i, j; i != 3; i++, j++) {...}

         auto r1 = getRange!int, r2 = getRange!int;
         // OK
         for (; !r1.empty && !r2.empty; r1.popFront, r2.popFront) {...}
         // Deprecated - the loop condition is always used
         for (; !r1.empty, !r2.empty; r1.popFront, r2.popFront) {...}

         MyContainerClass mc;
         // OK - expression statement, result not used
         if (!mc)
           (mc = new MyContainerClass), mc.append(new Entry);

         int i;
         // Deprecated
         mc = (i++, new MyContainerClass);
       }

2. Implicit catch statement are deprecated.

   Implicit catch statement are catch statement without type specified. They default to catching Throwable, which is something that should always be explicit.

   Example:

       int[] arr = new int[](10);
       // This will throw a RangeError
       try { arr[42]++; }
       catch { writeln("An error was caught and ignored"); }
       // The previous line is equivalent to:
       // catch (Throwable) { writeln("An error was caught and ignored"); }

3. Implicit string concatenation is deprecated.

   Implicit concatenation of string literal is a very early feature that is now supplanted by the concatenation operator ('~'), the later being more explicit.

   It could result in hard to spot bug, where one missed a comma in an array expression:

       void foo ()
       {
         string[] arr = [ "Hello", "buggy" "World" ];
         assert(arr.length == 3); // Fail, the length of the array is 2 and the content is [ "Hello", "buggyWorld" ]
       }

4. Restrictions of postblits and destructors in union fields have been lifted.

   It is now allowed to have fields with postblits (this(this)), destructors (~this()), or invariants (invariant()) in unions. Actually destructing or blitting the correct field is the duty of the programmer.

   Example:

       struct S { this(this) {} ~this() {} }
       union U
       {
           int var;
           S s;
       }

       unittest
       {
           U u; // won't call s.~this when u goes out of scope
           u = U(); // only copies the memory, use fieldwise assignment instead
           u.s = S(); // works like normal struct assignment
           destroy(u.s); // destroy currently used field
       }

5. Align attribute can be used with CTFEable expression.

   Example:

       version (D_LP64)
           enum n = 8;
       else
           enum n = 4;
       align (n) struct Data
       {
       align (n == 8 ? 2 : 1):
           ubyte[3] buffer;
           int flags;
       }

       version (D_LP64)
           static assert(Data.flags.offsetof == 4);
       else
           static assert(Data.flags.offsetof == 3);

6. scope is now ignored for value parameters without indirections.

   The scope storage class is now ignored for copied value parameters that don't have any indirections.

   Example:

       import std.traits;
       void valueParam(scope int param);
       static assert(ParameterStorageClassTuple!valueParam[0] == ParameterStorageClass.none);
       void scopeParam(scope int* param);
       static assert(ParameterStorageClassTuple!scopeParam[0] == ParameterStorageClass.scope_);

#### Compiler Changes

1. Native TLS on OS X 64 bit.

   The compiler has been updated to use native thread local storage (TLS) on OS X when compiling for 64 bit. This means that it's possible to to link with C/C++ TLS variables. This change is an ABI breaking change and requires recompiling libraries.

   The minimum required version of running the compiler and any produced binary is now Mac OS X Lion (10.7).

   Xcode 7.3 has a bug causing linker errors for some TLS variables. Xcode 7.3.1 fixes this bug. Any version older than 7.3 works as well.

2. Analysis for aliases in imported modules is deferred.

   Example:

       module lib;
       template ExpensiveApiImpl(int ver)
       {
           ...
           void func() {}
           pragma(msg, "instantiated ExpensiveApiImpl ", ver);
       }
       alias api1 = ExpensiveApiImpl!(1);
       alias api2 = ExpensiveApiImpl!(2);

       import lib;
       void main()
       {
           // OK, prints "instantiated ExpensiveApiImpl 1"
           api1.func();

           // Don't print "instantiated ExpensiveApiImpl 2", because
           // the alias name 'api2' is not used.
       }

3. Special keyword replaced by the source file's absolute file name.

   The __FILE_FULL_PATH__ special keyword is replaced by the absolute path of the current source file by the compiler.

   Example:

       import std.stdio;
       import std.path;
       import std.file;
       void main()
       {
           writeln("The main source file lives here: ", __FILE_FULL_PATH__);
           writeln("The contents are:");
           foreach(line; File(__FILE_FULL_PATH__, "r").byLine) {
               writeln(line);
           }
           writeln();
           writeln("Other files in the same directory are:");
           foreach(entry; dirEntries(__FILE_FULL_PATH__.dirName, SpanMode.shallow)) {
               writefln("  - %s", entry.name);
           }
       }

4. Add -verrors=spec switch.

   Shows errors from speculative compiles such as:

       void foo(int i)
       {
           int p;
           bool b = __traits(compiles, { p = &i; });
       }

   that are normally not shown:

       (spec:1) test.d(13): Error: cannot implicitly convert expression (& i) of type int* to int

   The number after spec: is the nesting of the speculative compiles.

#### Library Changes

1. TypeInfo.init has been deprecated.

   This is a step towards removal of TypeInfo.init, which is necessary to resolve a name clash with the type property init.

   Use TypeInfo.initializer instead.

2. New druntime switch --DRT-oncycle allows specifying what to do on cycle detection in modules.

   When module cycles are detected, the default behavior is to print the cycle, and abort execution. However, in many cases, the cycles are not harmful. With the new --DRT-oncycle switch, you can effect a different behavior when cycles are detected:

   --DRT-oncycle=abort
     This is the default behavior, and will abort, printing the cycle to stderr when the first cycle is detected
   --DRT-oncycle=print
     Print all cycles that are detected to stderr, but do not halt execution. Order of initialization is arbitrarily chosen based on the order the modules are in the binary
   --DRT-oncycle=ignore
     Do not print anything, and do not halt execution. Order of initialization is arbitrarily chosen based on the order the modules are in the binary
3. Implementation of std.digest.murmurhash.

   std.digest.murmurhash has been added. MurmurHash is a non-cryptographic hash function suitable for general hash-based lookup. It is optimized for x86 architectures.

       // Computing the 32-bits hash value of an int array using the convenient digest template.
       import std.digest.murmurhash;

       ubyte[4] hashed = digest!MurmurHash3_32_opt32([1, 2, 3, 4]);

4. Process creation in std.process was sped up on Posix.

   Previously, Posix systems would attempt to close every file descriptor from 3 to the maximum file descriptor number if inheritFDs was not specified with spawnProcess, pipeProcess, etc. std.process now uses poll() to determine which descriptors need closing.

5. algorithm.iteration.cumulativeFold was added.

   std.algorithm.iteration.cumulativeFold returns the successive reduced values of an input range.

       assert([1, 2, 3, 4, 5].cumulativeFold!((a, b) => a + b).array == [1, 3, 6, 10, 15]);
       assert([1, 2, 3].cumulativeFold!((a, b) => a + b)(100).array == [101, 103, 106]);

6. std.range.padLeft and std.range.padRight were added.

   std.range.padLeft and std.range.padRight are functions for padding ranges to a specified length using the given element.

       import std.range;
       import std.algorithm.comparison;

       assert([1, 2, 3, 4, 5].padLeft(0, 7).equal([0, 0, 1, 2, 3, 4, 5]));

       assert("Hello World!".padRight('!', 15).equal("Hello World!!!!"));

7. std.regex.regex now supports matching multiple patterns in one go.

       import std.regex;
       // multi-pattern regex
       auto multi = regex([`\d+,\d+`,`(a-z]+):(\d+)`]);
       auto m = "abc:43 12,34".matchAll(multi);
       assert(m.front.whichPattern == 2);
       assert(m.front[1] == "abc");
       assert(m.front[2] == "43");
       m.popFront();
       assert(m.front.whichPattern == 1);
       assert(m.front[1] == "12");

8. std.regex.splitter now supports keeping the pattern matches in the resulting range.

       import std.regex;
       import std.algorithm.comparison : equal;

       auto pattern = regex(`([\.,])`);
       assert("2003.04.05"
           .splitter!(No.keepSeparators)(pattern)
           .equal(["2003", "04", "05"]));
       assert("2003.04.05"
           .splitter!(Yes.keepSeparators)(pattern)
           .equal(["2003", ".", "04", ".", "05"]));

9. findLocalMin was added to std.numeric.

   std.numeric.findLocalMin finds a real minimum of a real function f(x) via bracketing.

       import std.numeric, std.math;

       auto ret = findLocalMin((double x) => (x-4)^^2, -1e7, 1e7);

       assert(ret.x.approxEqual(4.0));
       assert(ret.y.approxEqual(0.0));

10. ptr property and public constructor were added to std.experimental.ndslice.slice.Slice.

    ptr property allows to access Slice's underlaying pointer or range. Please refer to std.experimental.ndslice.slice.Slice's internal binary epresentation before using the property. ptr property is used in Mir for sparse tensors. ndslice developer mirror in Mir will be removed as soon as LDC (LLVM D compiler) supports D version 2.072.

    Public constructor for Slice was added to support std.experimental.ndslice integration with other languages and libraries such as Julia language and NumPy library.

11. std.experimental.ndslice.slice.Slice.toHash method was added.

        import std.experimental.ndslice;

        // hash is the same for allocated data and generated data
        auto a = iotaSlice(3, 7);
        auto b = iotaSlice(3, 7).slice;

        assert(a.toHash == b.toHash);

12. slice, shape, ndarray, and other utilities were added to std.experimental.ndslice.slice.

    These utility functions have been added to std.experimental.ndslice:

    - std.experimental.ndslice.slice.makeNdarray,
    - std.experimental.ndslice.slice.makeSlice,
    - std.experimental.ndslice.slice.makeUninitializedSlice,
    - std.experimental.ndslice.slice.ndarray,
    - std.experimental.ndslice.slice.shape,
    - std.experimental.ndslice.slice.slice,
    - std.experimental.ndslice.slice.uninitializedSlice.

    Example: Transposing common 2D array using ndslice

        import std.experimental.ndslice;

        auto ar = [[0, 1, 2], [3, 4, 5]];

        auto sh = ar.shape;         // [2, 3] type of size_t[2]
        auto sl = slice!int(sh);    // allocates slice with corresponding shape
        sl[] = ar;                  // fills sl with values from ar
        ar = sl.transposed.ndarray; // allocates common 2D array

        assert(ar == [[0, 3], [1, 4], [2, 5]]);

13. std.experimental.ndslice.slice.as lazy tensor was added.

        import std.experimental.ndslice;

        auto matrix = slice!double([2, 2], 0);
        auto stringMatrixView = matrix.as!string;
        assert(stringMatrixView ==
                [["0", "0"],
                 ["0", "0"]]);

        matrix.diagonal[] = 1;
        assert(stringMatrixView ==
                [["1", "0"],
                 ["0", "1"]]);

14. iotaSlice lazy tensor was added to std.experimental.ndslice.selection.

    std.experimental.ndslice.selection.iotaSlice is the fastest possible Slice.

        import std.experimental.ndslice;

        auto sl = iotaSlice([2, 3], 10);

        assert(sl.transposed == [[10, 13],
                                 [11, 14],
                                 [12, 15]]);

15. std.experimental.ndslice.selection.indexSlice lazy tensor was added.

        import std.experimental.ndslice;

        auto slice = indexSlice(2, 3);

        assert(slice == [[[0, 0], [0, 1], [0, 2]],
                         [[1, 0], [1, 1], [1, 2]]]);

16. std.experimental.ndslice.selection.repeatSlice lazy tensor was added.

        import std.experimental.ndslice;

        auto sl = iotaSlice(3).repeatSlice(4);
        assert(sl == [[0, 1, 2],
                      [0, 1, 2],
                      [0, 1, 2],
                      [0, 1, 2]]);

        auto m = 4.repeatSlice(2, 3);
        assert(m == [[4, 4, 4],
                     [4, 4, 4]]);

17. std.experimental.ndslice.selection.mapSlice lazy tensor was added.

        import std.experimental.ndslice;

        auto s = iotaSlice(2, 3).mapSlice!(a => a * a);
        assert(s == [[ 0,  1,  4],
                     [ 9, 16, 25]]);

18. partial support for Math Index Order was added to std.experimental.ndslice.slice.Slice.

        import std.experimental.ndslice;

        auto sl = iotaSlice(3, 4);

        assert(sl[2, 3] == 11); // D & C index order
        assert(sl(3, 2) == 11); // Math & Fortran index order

19. std.algorithm.mutation.swapAt was exposed

    std.algorithm.mutation.swapAt allows to swap elements of a RandomAccessRange by their indices.

20. std.range.iota's .length` property is fixed to size_t instead of the type being iterated

    std.range.iota's .length property is now always returned as size_t. This means if you are on a 32-bit CPU and you are using iota to iterate 64-bit types, the length will be truncated to size_t. In non-release mode, you will get an exception if the length exceeds size_t.max in your call to iota.

21. std.algorithm.searching.{min,max}Element have been added.

    std.algorithm.searching.minElement and std.algorithm.searching.maxElement are functions to search for the minimum and maximum element in a range. They support a custom map accessor.

        import std.algorithm.searching;
        import std.range;
        import std.typecons;
        assert([3, 1, 4].minElement == 1);
        assert([4, 7, 5].enumerate.maxElement!`a.value` == tuple(1, 7));

22. Added std.math.quantize.

    std.math.quantize rounds to the nearest multiple of some number. Features:

    - The rounding method can be specified using the rfunc parameter. By default, the current rounding mode will be used, which is typically "banker's rounding".
    - Overloads are included for the common case of rounding to the Nth digit place in some base.
    - If known at compile time, the base and exponent (digit place) can be supplied as template parameters for better performance.

        import std.math;

        assert(12345.6789L.quantize(20.0L) == 12340.0L);
        assert(12345.6789L.quantize!(10, -2) == 12345.68L);
        assert(12345.6789L.quantize!(10, floor)(-2) == 12345.67L);

23. Three new traits were added to std.traits.

    std.traits.isType, std.traits.isFunction, and std.traits.isFinal were added to std.traits.

        import std.traits;

        static assert(isType!int);

        struct S {}
        class C {}
        interface I {}

        static assert(isType!S);
        static assert(isType!C);
        static assert(isType!I);

        import std.traits;

        void func(){}
        struct S
        {
            @property int prop(){ return 0; }
        }

        static assert(isFunction!func);
        static assert(isFunction!(S.prop));

        // is a delegate type, not function type
        static assert(!isFunction!(typeof(&S.prop)));

        import std.traits;

        class C
        {
            void nf() {}
            final void ff() {}
        }
        final class FC {}

        static assert(!isFinal!(C));
        static assert( isFinal!(FC));
        static assert(!isFinal!(C.nf));
        static assert( isFinal!(C.ff));

24. std.range.generate fixed to be a proper range.

    std.range.generate was set up to return a different value on each call to front. In addition, popFront did nothing. This means that manipulation functions like std.range.drop did nothing. The new version uses a one-element cache to meet the expectations of the range definition. It preserves the ref-ness of the generator as well.

25. Final was added to std.experimental.typecons.

    std.experimental.typecons.Final can't be mutated directly. However references are typed with their original mutability. This is equivalent to final in Java or readonly in C#.

        auto a = makeFinal([1, 2, 3]);
        assert(a[0] == 1);

        // a = [2, 3]; // Reassignment is illegal,
        a[0] = 42; // Elements or fields are still mutable.

        assert(a[0] == 42);

26. std.traits.isInnerClass was added to identify nested classes with an accessible outer pointer

    Classes, that are nested inside other classes (and not inside functions) and that don't define any outer symbol, have an outer field which allows to get and even set the instance of the outer class they are nested in. std.traits.isInnerClass allows to identify them. The types satisfying isInnerClass are a subset of the ones satisfying isNested, as the latter includes classes and structures nested inside functions or that redefine outer.

        class Outer
        {
            class Inner1 { }
            class Inner2
            {
                int outer; // redefines outer, so the Outer instance is not accessible
            }
            static class Inner3 {}  // static, thus not nested
        }
        static assert(isInnerClass!(Outer.Inner1));
        static assert(!isInnerClass!(Outer.Inner2));
        static assert(!isInnerClass!(Outer.Inner3));

27. std.conv.emplace no longer allows to emplace classes nested directly inside other classes without specifying a suitable outer pointer

    If a class is nested within another class (there's a new trait std.traits.isInnerClass to check for this condition), emplace requires now the outer class instance as additional mandatory parameter. Before this change, emplacing did not require this parameter and access to variables of the outer class resulted in segmentation faults.

        class Outer
        {
            int x;
            class Inner
            {
                auto getX() { return x; }
            }
        }
        Outer outer = new Outer();

        // auto inner = buf.emplace!(Outer.Inner)();   // this is no longer allowed
        auto inner = buf.emplace!(Outer.Inner)(outer); // use this instead

        auto x = inner.getX();  // this used to cause a segmentation fault;
                                // now it works as expected

28. A runtime switch for selecting the GC implementation was added.

    This allows to select a GC at program startup.

        ./my_d_exe --DRT-gcopt=gc:conservative # use conservative GC (default)
        ./my_d_exe --DRT-gcopt=help # list available GC options

    See gc_config for more information about gcopt.

    In a future release it should be possible to extend the list of GCs by linking with an alternative one.

29. A manual GC was added.

    Use the --DRT-gc=gc:manual option to select the manual GC.

    This GC is a thin wrapper around malloc and free and does not collect any garbage. It only releases memory explicity freed using GC.free. Builtin language constructs such as arrays or delegates that might allocate GC memory can leak. It supersedes the gcstub implementation.

    The manual GC is useful for applications that deterministically control memory. Use dmd's -vgc switch to keep track of hidden allocations that might leak.

    It can also be helpful to find memory corruptions with tools like valgrind.

List of all bug fixes and enhancements in D 2.072.0:

#### DMD Compiler regressions

1. Bugzilla 15726: [REG2.068.0] forward reference error for circular classes, RefCounted
2. Bugzilla 15861: [REG 2.069] Wrong double-to-string conversion with -O
3. Bugzilla 15925: -transition=[check]imports ignores import declaration from mixin templates
4. Bugzilla 15992: [REG2.072a] ICE with field variable of instantiated struct
5. Bugzilla 16080: [REG2.071.0] Internal error: backend\cgobj.c 3406 when building static library
6. Bugzilla 16115: [REG2.067] Wrong code with comma operator
7. Bugzilla 16233: [REG2.069] ICE on wrong code
8. Bugzilla 16254: [REG 2.072-devel] wrong switch skips initialization error with mixed in case labels
9. Bugzilla 16292: [REG2.069] bogus Error: goto skips declaration of variable
10. Bugzilla 16536: DMD master does not build on OS X 10.11.6/Xcode 7.3.1
11. Bugzilla 16570: [REG 2.072.0-b1] Enum member with interpreted initializer has type of initializer not enum

#### DMD Compiler bugs

1. Bugzilla 1357: Cannot use FFFF and FFFE in Unicode escape sequences.
2. Bugzilla 5305: Cannot take pointer to intrinsic function
3. Bugzilla 10225: core.simd wrong codegen for XMM.STOUPS with __simd_sto
4. Bugzilla 10591: Error: only one main allowed doesn't show location of conflicting main symbols
5. Bugzilla 11047: UDA + getAttributes bypass purity/safety check
6. Bugzilla 11169: __traits(isAbstractClass) prematurely sets a class to be abstract
7. Bugzilla 11585: ICE(cgcod.c) with SIMD and -O
8. Bugzilla 12357: Untyped string variable fails silently. No compiler warning given.
9. Bugzilla 12527: Cannot make @system function/delegate alias in a @safe section
10. Bugzilla 12537: Templatizing opEquals results in infinite recursion in the compiler
11. Bugzilla 12558: try/catch allows implicit catching of Errors without specifying any Exception type
12. Bugzilla 12822: Delegate .ptr assignment considered @safe
13. Bugzilla 12939: More uniform error messages for not nothrow and not @safe functions
14. Bugzilla 13116: Should not be able to return ref to 'this'
15. Bugzilla 13147: Wrong codegen for thisptr in naked extern (C++) methods
16. Bugzilla 13536: Union of delegates breaks @safety
17. Bugzilla 13537: Unions may break immutability
18. Bugzilla 13674: ICE(el.c) with simd multiplication of short8
19. Bugzilla 13698: ICE(e2ir.c) on on simd call
20. Bugzilla 13867: Overriding a method from an extern(C++) interface requires extern(C++) on the method definition
21. Bugzilla 13975: ICE: dmd crash if -gc and enum member is immutable int
22. Bugzilla 14162: Erratic inference of @safe for lambdas
23. Bugzilla 14450: Incorrect overloading of immutable constructor for template struct
24. Bugzilla 14496: void initialization of member with indirections must not be @safe
25. Bugzilla 14504: Regex Optimizer doesn't merge equivalent threads.
26. Bugzilla 14532: switch block allows creating uninitialized variables
27. Bugzilla 15116: Unreasonable rejection of tuple field access via named mixin
28. Bugzilla 15117: Unreasonable circular reference error via named mixin
29. Bugzilla 15144: Bad operand size in asm { movdqa ... } produces bogus ubyte16 initializer error elsewhere.
30. Bugzilla 15191: DIP25: Taking address of ref return is not type checked soundly
31. Bugzilla 15192: DIP25: Nested ref returns are type checked unsoundly
32. Bugzilla 15193: DIP25 (implementation): Lifetimes of temporaries tracked incorrectly
33. Bugzilla 15258: Anonymous const union members don't allow for initialization
34. Bugzilla 15306: Delegates with shared context can have unshared aliasing
35. Bugzilla 15326: False positive for dangling else warning
36. Bugzilla 15333: Assertion failed: (!fd->vthis->csym), function FuncDeclaration_toObjFile, file glue.c, line 1034.
37. Bugzilla 15372: DMD emits wrong mangling for extern(C++) free function templates
38. Bugzilla 15399: unaligned pointers are not @safe
39. Bugzilla 15513: Memory Corruption with thread local objects
40. Bugzilla 15573: -O -inline causes wrong code with idiv instruction
41. Bugzilla 15607: [ICE] CTFE internal error: bad compare on accessing default-initialized static immutable array of array
42. Bugzilla 15672: Casting from void[] to T[] is erroneously considered @safe
43. Bugzilla 15680: TypeInfo broken for typeof(null)
44. Bugzilla 15703: @safe code should not allow certain types of array casts
45. Bugzilla 15704: @safe code should not allow copying to/from void[]
46. Bugzilla 15757: D main is a nested function and cannot be accessed
47. Bugzilla 15760: Segfault when compiling when using __gshared and selective import.
48. Bugzilla 15762: Array casts involving const enums can be made @safe
49. Bugzilla 15799: Misleading error message against the contract followed by semicolon in interface
50. Bugzilla 15802: (SIGSEGV) CppMangleVisitor::source_name
51. Bugzilla 15816: ICE void ddmd.dclass.__assert(int) with error: anonymous classes not allowed
52. Bugzilla 15835: Segfault with typeid call from lazy argument
53. Bugzilla 15855: "a[{for" causes dmd to segfault
54. Bugzilla 15913: cannot initialize immutable fixed size array without similar const-code
55. Bugzilla 15922: DMD segfault in functionParameters()
56. Bugzilla 15934: Non-virtual super class member function call ignores 'this' type qualifier
57. Bugzilla 15957: Disabled postblit + template mixin break opAssign with confusing error message
58. Bugzilla 15974: Spurious error: argument to mixin must be a string, not (expression()) of type string
59. Bugzilla 15999: Inline assembly incorrect sign extension instead of error
60. Bugzilla 16035: Compiler crashes with inout, templates, and recursion
61. Bugzilla 16094: error: overlapping slice assignment (CTFE)
62. Bugzilla 16095: a delegate can mutate immutable data and break shared / non-shared enforcements
63. Bugzilla 16096: Linking to static library: can't parse __DATA/__objc_imageinfo
64. Bugzilla 16142: Adding a dtor / postblit (even disabled) forces opAssign
65. Bugzilla 16193: opApply() doesn't heap allocate closure
66. Bugzilla 16195: delete should be @system
67. Bugzilla 16226: -dip25 doesn't work if the return type is not explicit
68. Bugzilla 16228: Insufficient diagnostics for wrong application of DIP25
69. Bugzilla 16229: [Win64] Crash when generating huge symbols
70. Bugzilla 16340: case where version(unittest) results in an invalid warning about a dangling else
71. Bugzilla 16365: cannot allow calling function pointer from delegate in @safe code
72. Bugzilla 16439: Non-typesafe variadic functions can never be @safe
73. Bugzilla 16466: Alignment of reals inside structs on 32 bit OSX should be 16, not 8
74. Bugzilla 16525: C++ member variables have no mangling
75. Bugzilla 16530: -O -cov interaction leads to wrong codegen
76. Bugzilla 16534: RefRange should define opDollar if it defines length

#### DMD Compiler enhancements

1. Bugzilla 2659: Remove the comma operator
2. Bugzilla 3657: No lexical scope for local variables in debug info
3. Bugzilla 3827: Warn against and then deprecate implicit concatenation of adjacent string literals
4. Bugzilla 9766: align(n) with n compile-time constant
5. Bugzilla 11886: "cannot access frame" error on lambda in lambda
6. Bugzilla 13242: imported aliases should be analyzed lazily
7. Bugzilla 14411: switch statement: docs/behavior differ
8. Bugzilla 15323: Module.members and .deferred3 should use data structure with fast lookup
9. Bugzilla 16077: [CodeView] no language information in MS-COFF debug information
10. Bugzilla 16394: TypeInfo.init() for static arrays returns single element instead of whole array
11. Bugzilla 16409: Add support for assign-style switches

#### Phobos regressions

1. Bugzilla 15457: Symbol Undefined __lseeki64
2. Bugzilla 15918: [2.070] Results from findSplit can no longer be assigned to each other
3. Bugzilla 16179: [REG2.072] git HEAD: multiSort no longer callable with delegate with context
4. Bugzilla 16291: phobosinit never gets called (EncodingScheme.create fails)
5. Bugzilla 16544: Add File.reopen
6. Bugzilla 16580: [REG 2.072.0-b1] spawnShell segfaults on macOS
7. Bugzilla 16587: split("", "x") should be []

#### Phobos bugs

1. Bugzilla 4509: XML parser in std.xml throws TagException if the attr value is put in apostrophes.
2. Bugzilla 7972: std.file.read allocate a buffer the size of the file even when given a upper limit
3. Bugzilla 7989: isInputRange and isForwardRange declare unused variables
4. Bugzilla 11791: std.file.write failed to write huge files
5. Bugzilla 12368: std.file.write conflicts with std.stdio.write
6. Bugzilla 12897: std.json.toJSON doesn't translate unicode chars(>=0x80) to "\uXXXX"
7. Bugzilla 13572: etc.c.zlib must be nothrow
8. Bugzilla 14136: std.uni.utfMatcher breaks @safety
9. Bugzilla 14137: std.socket.getAddressInfo breaks @safety
10. Bugzilla 14485: .front of empty filtered zip range is accessible
11. Bugzilla 14615: std.regex.replaceFirstInto throws exception when no match is found
12. Bugzilla 14966: Comparing two std.xml.Document result in infinite recursion
13. Bugzilla 15341: segfault with std.signals slots
14. Bugzilla 15658: isFile isn't a template
15. Bugzilla 15773: D's treatment of whitespace in character classes in free-form regexes is not the same as Perl's
16. Bugzilla 15791: Cannot get a stored nested struct object from Variant
17. Bugzilla 15823: opIndex doesn't work for const std.variant.Variant
18. Bugzilla 15827: std.variant.Variant can not be initialized with some struct
19. Bugzilla 15864: chmgen triggers exception in std.regex
20. Bugzilla 15865: std.file.copy(from,to) deletes the file if from and to specify the same file
21. Bugzilla 15872: [ndslice] indexing a slice with an array causes an error inside ndslice
22. Bugzilla 15874: getSymbolsByUDA fails if struct has no UDAs
23. Bugzilla 15884: Assigning char[] to std.json.JSONValue creates array, not string
24. Bugzilla 15885: float serialized to JSON loses precision
25. Bugzilla 15917: std.concurrency module destructor causes useless creation of new MessageBox
26. Bugzilla 15919: [ndslice] Undetected spell miss in selection.reshape()
27. Bugzilla 15920: std.traits.MemberFunctionsTuple gives a wrong result
28. Bugzilla 15960: SetUnion should filter duplicates
29. Bugzilla 15963: Hidden unresolved forward reference issue in std.uni
30. Bugzilla 15964: The template constraints for std.uni.sicmp are too permissive
31. Bugzilla 15973: nextPow2 and truncPow2 rely on processor specific behavior
32. Bugzilla 15980: std.traits.Identity is undocumented but public
33. Bugzilla 16010: [ndslice] byElement throw assert error
34. Bugzilla 16026: std.math.frexp!float() wrong for very small subnormal values
35. Bugzilla 16036: std.net.isemail - isEmail reurns "valid: false" for any email with EmailStatusCode.none (default)
36. Bugzilla 16046: ScopedAllocator does not set prev, causing segfaults
37. Bugzilla 16054: can break immutable with std.typecons.Rebindable
38. Bugzilla 16070: std.meta.{ApplyLeft,ApplyRight} fail with mixed type/value arguments
39. Bugzilla 16072: std.container.binaryheap should be extendable for arrays
40. Bugzilla 16090: popFront generates out-of-bounds array index on corrupted utf-8 strings
41. Bugzilla 16192: std.conv.toChars() opSlice wrong for radix other than 10
42. Bugzilla 16219: std.experimental.allocator.makeArray does unnecessary allocations for ranges with length
43. Bugzilla 16238: std.string.lastIndexOf fails compilation with -de
44. Bugzilla 16241: std.xml mistakenly disallows "==" in comments but allows "--"
45. Bugzilla 16331: std.container.array constructor shouldn't check result of emplacement
46. Bugzilla 16351: Nonstandard output library causes no-argument writeln() to fail.
47. Bugzilla 16372: Broken links in documentation
48. Bugzilla 16383: Algebraic visit does not match handlers to const classes
49. Bugzilla 16385: std.range: undefined behaviour when skipping over 0xff in string.popFront
50. Bugzilla 16386: std.concurrency: destructors called twice on objects passed as Message
51. Bugzilla 16387: getSymbolsByUDA works with structs but fails with classes
52. Bugzilla 16413: multiSort doesn't work with @system comparison function
53. Bugzilla 16420: Incorrect example in std.getopt docs
54. Bugzilla 16501: packed ndslices does not compile
55. Bugzilla 16503: [ndslice] prevents fastmath LDC attribute
56. Bugzilla 16506: segfaults in std.experimental.allocator: FreeTree with GCAllocator or Mallocator
57. Bugzilla 16507: std.experimental.allocator: FreeTree clears too eagerly

#### Phobos enhancements

1. Bugzilla 2104: std.regex: escape function for regular expressions
2. Bugzilla 7551: Regex parsing bug for right bracket in character class
3. Bugzilla 10777: std.algorithm.multiSort to return a std.range.SortedRange
4. Bugzilla 11229: std.string.toLower is slow
5. Bugzilla 12227: Allow matching multiple patterns in one go with std.regex
6. Bugzilla 12367: std.regex: Recognize (?# ... ) comment syntax
7. Bugzilla 12379: Add toFile function which writes its first argument to a file
8. Bugzilla 13409: std.range.padLeft/Right
9. Bugzilla 13422: std.ascii has isAlphaNum but std.uni doesn't
10. Bugzilla 13796: A simple "array head const" struct for Phobos
11. Bugzilla 15229: BigInt(Range of chars) too
12. Bugzilla 15797: Add Option to Not Drop Matches in std.regex.splitter
13. Bugzilla 15800: std.conv.to!int does not work with ranges of any char type
14. Bugzilla 15803: std.file should support sub-second file time precision on POSIX
15. Bugzilla 15860: lockstep should support foreach_reverse
16. Bugzilla 15991: std.datetime.StopWatch is not @nogc
17. Bugzilla 15995: std.conv.text and friends can be made faster with std.array.appender
18. Bugzilla 16308: [ndslice] should always has save primitive
19. Bugzilla 16311: toHash for Slice is not defined
20. Bugzilla 16315: [] ?= operations does not work with packed slices [ndslice]
21. Bugzilla 16319: std.experimental.allocator.make subtly wrong with nested classes
22. Bugzilla 16363: Cannot construct a random access range using frontTransversal
23. Bugzilla 16364: getUDAs and hasUDA do not give consistent results
24. Bugzilla 16443: std.getopt: segmentation fault with empty string option

#### Druntime regressions

1. Bugzilla 1180: the GC failes to handle large allocation requests propperly
2. Bugzilla 16211: [REG 2.058] Cyclic dependencies broken again

#### Druntime bugs

1. Bugzilla 6333: The 'capacity' function is not pure/nothrow/@safe.
2. Bugzilla 14601: pthread functions aren't marked @nogc
3. Bugzilla 15111: hashOf fails for structs that have an alias this to a dynamic array
4. Bugzilla 15838: Many Win32 API callback functions miss extern(Windows)
5. Bugzilla 15958: Missing extern(Windows) of core.sys.windows functions
6. Bugzilla 15959: core.sys.windows modules should be modified for x64
7. Bugzilla 15976: explicite TLS initializes badly in DLLs if other threads exist
8. Bugzilla 15987: core.sys.windows.msacm remains pseudo definitions
9. Bugzilla 15997: Wrong constant value for ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED in winhttp
10. Bugzilla 16007: Some Win32 API structs has wrong definitions
11. Bugzilla 16049: core.sys.windows structs have wrong sizes and aligns
12. Bugzilla 16594: module destructors called again if an exception got thrown earlier

#### Druntime enhancements

1. Bugzilla 14117: core.atomic should be @safe

#### dlang.org bugs

1. Bugzilla 15442: Eponymous template restrictions should be documented
2. Bugzilla 16004: Document changes to protection attributes
3. Bugzilla 16016: Remove std.concurrencybase from the docs
4. Bugzilla 16040: Remove Dconf announcement
5. Bugzilla 16114: [ddox] "Improve this page" links broken for package.d modules
6. Bugzilla 16167: chm-nav.json generation is broken
7. Bugzilla 16186: [Programming in D for C Programmers] Backticks should be escaped in explanation of raw string syntax
8. Bugzilla 16231: Language specification: rename std.regexp -> std.regex

#### dlang.org enhancements

1. Bugzilla 16141: Organizations page unreachable
2. Bugzilla 16152: dpl-docs/ddox doesn't show documentation for eponymous template member
3. Bugzilla 16464: opCast doco is insufficient

#### Installer bugs

1. Bugzilla 16349: better curl retry for install.sh script

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