On Friday, 16 February 2018 at 11:45:21 UTC, arturg wrote:
this code fails to compile:
void delegate(void*) dg;
void delegate(void*)[] dgs = [dg, dg, dg];
dgs.writeln;
dgs.remove(1).writeln();
if you comment out dgs.writeln; it works as expected,
it works if you use other types then void*:
void delegate(int*) dg;
void delegate(int*)[] dgs = [dg, dg, dg];
dgs.writeln;
dgs.remove(1).writeln();
the compiler is DMD64 D Compiler v2.078.2 and the error message
is:
/usr/include/dlang/dmd/std/algorithm/mutation.d(1929): Error:
template std.algorithm.mutation.moveAll cannot deduce function
from argument types !()(void delegate(void*)[], void
delegate(void*)[]), candidates are:
/usr/include/dlang/dmd/std/algorithm/mutation.d(1455):
std.algorithm.mutation.moveAll(InputRange1,
InputRange2)(InputRange1 src, InputRange2 tgt) if
(isInputRange!InputRange1 && isInputRange!InputRange2 &&
is(typeof(move(src.front, tgt.front))))
empty.d(9): Error: template instance
std.algorithm.mutation.remove!(cast(SwapStrategy)2, void
delegate(void*)[], int) error instantiating
running all dmd version on run.dlang.io
gives me this output:
Up to 2.075.1: Success with output:
-----
[void delegate(void*), void delegate(void*), void delegate(void*)]
[void delegate(void*), void delegate(void*)]
-----
Since 2.076.1: Failure with output:
-----
/path/to/dmd.linux/dmd2/linux/bin64/../../src/phobos/std/algorithm/mutation.d(1929):
Error: template std.algorithm.mutation.moveAll cannot deduce function from
argument types !()(void delegate(void*)[], void delegate(void*)[]), candidates
are:
/path/to/dmd.linux/dmd2/linux/bin64/../../src/phobos/std/algorithm/mutation.d(1455):
std.algorithm.mutation.moveAll(InputRange1, InputRange2)(InputRange1 src, InputRange2 tgt) if
(isInputRange!InputRange1 && isInputRange!InputRange2 &&
is(typeof(move(src.front, tgt.front))))
onlineapp.d(7): Error: template instance
std.algorithm.mutation.remove!(cast(SwapStrategy)2, void
delegate(void*)[], int) error instantiating
-----
