[Bug debug/93751] -g1 does not behave per manual

[stilor at att dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93751

--- Comment #1 from Alexey Neyman <stilor at att dot net> ---
Created attachment 47845
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47845&action=edit
Patch