[bug #62540] refer/ref.cpp: comparison between two arrays is deprecated in C++20

[G. Branden Robinson]

Update of bug #62540 (project groff):

                Category:                    Core => Preprocessor refer     

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Follow-up Comment #1:

Hi Bjarni,

Can you post the configuration report you got from the build you quote?

By "configuration report", I mean this part.


GNU Troff version 1.23.0.rc1.2497-074da
----------------------------------------------------------------------
 installation prefix              : /usr/local
 C++ compiler                     : g++ -Wall -Wextra -Wformat=2 
-Wstringop-overflow=4 -Wshadow=global -Wredundant-decls -Wunused
-Wunused-parameter -fsanitize=signed-integer-overflow
-fsanitize-undefined-trap-on-error -fstack-protector-strong -fno-common
-fstack-clash-protection -ftrapv -funsigned-char -fvar-tracking-assignments 
-ggdb -Og -fcheck-new -Wredundant-decls -std=c++98 -pedantic -Wformat=2
-D_FORTIFY_SOURCE=2 
 use libgroff's memory allocator  : no
 C compiler                       : gcc -Wall -Wextra -Wformat=2 
-Wstringop-overflow=4 -Wshadow=global -Wredundant-decls -Wunused
-Wunused-parameter -fsanitize=signed-integer-overflow
-fsanitize-undefined-trap-on-error -fstack-protector-strong -fno-common
-fstack-clash-protection -ftrapv -funsigned-char -fvar-tracking-assignments 
-ggdb -Og -Wmissing-prototypes -Wold-style-definition -Wstrict-prototypes 
-Wold-style-declaration  -Wformat=2 -D_FORTIFY_SOURCE=2 
 Perl interpreter version         : 5.32.1
 X11 support                      : enabled
 X11 app defaults directory       : /usr/local/lib/X11/app-defaults
 'groff -l' uses print spooler    : lpr
 use URW fonts for PDF output     : yes
 preconv can use uchardet library : yes
 tests can use PDF tools          : yes
----------------------------------------------------------------------


I don't need any of the notices that may appear subsequently, about X11
app-defaults or buggy Ghostscript or similar.


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