On 9/14/21 11:32 AM, Martin Liška wrote:
On 9/10/21 15:05, Basile Starynkevitch wrote:
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",
| ^~
Hello.
The warning -Wformat-diag is internal GCC warning that hasn't been
documented. I'm CC'ing the warning author.
Where can I read the complete specification of % escape sequences for
inform?
You can read it just in source code if I'm correct, that's the only
option you have:
gcc/c-family/c-format.c:3031.
Sorry, even after looking inside it (function check_tokens presumably),
I don't understand them.
Could anyone on the list give a better explanation, or at least a dozen
of examples covering most of the cases!
Thanks
--
Basile Starynkevitch <bas...@starynkevitch.net>
(only mine opinions / les opinions sont miennes uniquement)
92340 Bourg-la-Reine, France
web page: starynkevitch.net/Basile/
