[Bug breakpoints/31095] Setting a breakpoint in a C++ header file takes a long time

["thomas at mitterfellner dot at" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31095

--- Comment #2 from Thomas <thomas at mitterfellner dot at> ---
I know I've experienced this behavior in versions prior to 13
2 (definitely in 13.1 too).

I've been setting the breakpoints in VS Code (usually many of them, most in cpp
files, though, so it wasn't obvious to me that the breakpoints in the header
files are causing the delay). When I actually start the debugging session, I
see in the console that gdb starts quickly but then it takes a long time for
the program to be debugged to start (the breakpoints in the main routine to be
reached).

When I had found out the cause of the delay by chance, I tried this from a
command line gdb session. At the prompt, I set a breakpoint via

b file.hpp:<line no.>

and as soon as I hit Enter, there's a delay before I get the next prompt. I
cross-checked in a new session; when I do

b file.cpp:<line no.>

and hit Enter, I immediately get a new prompt.

Regarding the number of files the headers are included from: I have to check
that separately (but I think it's not too many).

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