bug#30788: 27.0.50; Getting 'char-displayable-p: Invalid hash table rehash size: 1.0' when starting emacs -Q

[Peter Dyballa]

Could be Clang is *not* the proper compiler…

Of course code signing does not work after a reboot (bug report with Apple 
opened), so I used the root account for debugging. I started GDB 8.0.1 
(installed as '-rwxr-xr-x  1 root  admin  6248012 17 Nov  2017 
/opt/local/bin/ggdb') à la


        env LC_NUMERIC=de_DE.UTF-8 ggdb -i=mi emacs-27.0.50.1

Communication with GDB is:

...
        SIGINT is used by the debugger.
        Are you sure you want to change it? (y or n) [answered Y; input not 
from terminal]
        DISPLAY = :0
        TERM = dumb
        (gdb) set args -Q
        (gdb) break setlocale
        Function "setlocale" not defined.
        Breakpoint 3 (setlocale) pending.
        (gdb) run
        Starting program: 
/Users/pete/Quellen/Emacs_CVS/emacs-27.0.50/src/emacs-27.0.50.1 -Q 
        [New Thread 0xf03 of process 8062]
        warning: unhandled dyld version (15)
        [New Thread 0x1007 of process 8062]
        [New Thread 0xd0f of process 8062]
        [New Thread 0x1603 of process 8062]
        xpr
          C-c C-c[Inferior 1 (process 6709) exited normally]
        (gdb) xpr
        The history is empty.

Launched Emacs displays the error, but gdb does show any prompt. In the window 
*breakpopints of ...* is shown:

        Num Type       Disp Enb Addr               Hits What
        1   breakpoint keep y   0x000000010024a360 0    
<terminate_due_to_signal>
        2   breakpoint del  y   0x00000001002928e0 0    <init_sys_modes>
        3   breakpoint keep y   <PENDING>          0    setlocale

I'll try anew with GCC!

--
Greetings

  Pete

"Only two things are infinite, the universe and human stupidity, and I'm not 
sure about the former."
                                – Albert Einstein