Dynamically reallocated buffer

[Maciej Sobczak <see.my.homepage@gmail.com>]

I need a dynamically reallocated buffer of bytes, which I can extend
at run-time by appending new fragments to the whole buffer. The
purpose of the buffer is to pass it later to the subprogram that
writes it "en bloc" to some external device.

For those of you who know C++ I need something like:

vector<unsigned char> buffer;
// fill the buffer with push_back or insert at end
// ...
write_to_device(&buffer[0], buffer.size());

The problem is that Ada.Containers.Vectors does not provide the
necessary guarantees to be any useful in this context.

What are your suggestions?

--
Maciej Sobczak
http://www.msobczak.com/