Found this unanswered question on StackOverflow.
This program:
import std.stdio;
void add(ref int[] data)
{
data ~= 1;
data ~= 2;
}
void main()
{
int[] a;
writeln("capacity:",a.capacity);
auto cap = a.reserve(1000); // allocated may be more than
requested
assert(cap >= 1000);
assert(cap == a.capacity);
writeln("capacity:",a.capacity);
a.add();
writeln(a);
}
compiled with "dmd -profile=gc"
has this output in profilegc.log
bytes allocated, allocations, type, function, file:line
4 1 int[] profiling.add profiling.d:8
4 1 int[] profiling.add profiling.d:7
The question is: why doesn't using reserve() cause an allocation
to be shown?
