Exact inform format escape sequence (GCC 10 or GCC 11)

[Basile Starynkevitch]

Hello all,

In the Bismon static source code analyzer on 
https://github.com/bstarynk/bismon/ commit ad8b6270691e

(funded by http://decoder-project.eu/ ....) which contains some GPLv3+ 
GCC plugin code under directory gccplugins/

I am getting when compiling it


gcc10_metaplugin_BMGCC.cc: In function ‘int 
plugin_init(plugin_name_args*, plugin_gcc_version*)’:
gcc10_metaplugin_BMGCC.cc:165:85: warning: unquoted whitespace character 
‘\x0a’ in format [-Wformat-diag]
   165 |     warning(UNKNOWN_LOCATION, "BISMON GCC10 METAPLUGIN: 
datestamp difference for %s:\n"
| ^~~
   166 |      " plugin has %s, GCC had %s; this is risky.",
       | ~~
gcc10_metaplugin_BMGCC.cc:169:84: warning: unquoted whitespace character 
‘\x0a’ in format [-Wformat-diag]
   169 |     warning(UNKNOWN_LOCATION, "BISMON GCC10 METAPLUGIN: 
devphase difference for %s:\n"
| ^~~
   170 |      " plugin has %s, GCC had %s; this is risky.",
       | ~~
gcc10_metaplugin_BMGCC.cc:174:89: warning: unquoted whitespace character 
‘\x0a’ in format [-Wformat-diag]
   174 |     warning(UNKNOWN_LOCATION, "BISMON GCC10 METAPLUGIN: 
configuration difference for %s:\n"
| ^~~
   175 |      " plugin has %s, GCC had %s; this is risky.",
       | ~~
gcc10_metaplugin_BMGCC.cc: In function ‘void 
parse_plugin_arguments(const char*, plugin_name_args*)’:
gcc10_metaplugin_BMGCC.cc:405:53: warning: unquoted sequence of 2 
consecutive space characters in format [-Wformat-diag]
   405 |         inform (UNKNOWN_LOCATION, "Bismon plugin %qs (%s:%d) 
will handle GCC include-file events with prefix %qs",
       |                                                     ^~



Where can I read the complete specification of % escape sequences for 
inform?


Thanks




Basile Starynkevitch                  <basile@starynkevitch.net>
(only mine opinions / les opinions sont miennes uniquement)
92340 Bourg-la-Reine, France
web page: starynkevitch.net/Basile/