addr2line not showing line numbers

[Nemanja Boric via Digitalmars-d]

On Sunday, 6 August 2017 at 06:20:28 UTC, Shachar Shemesh wrote:
> gdb can break on function name, but cannot single step from 
> that point, as it claims it has no line information.

Judging by the stack trace for 1) it looks like it's not breaking 
for the user provided main function (called by druntime), but on 
the druntime's main, called by glibc, which is possible to be 
built with no debug info?