[asterisk-bugs] [JIRA] (ASTERISK-27156) Asterisk won't compile on Fedora 26 with devmode enabled.

[George Joseph (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-27156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

George Joseph updated ASTERISK-27156:
-------------------------------------

    Status: Open  (was: Triage)

> Asterisk won't compile on Fedora 26 with devmode enabled.
> ---------------------------------------------------------
>
>                 Key: ASTERISK-27156
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27156
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/BuildSystem
>    Affects Versions: 13.17.0, 14.6.0, GIT
>            Reporter: Corey Farrell
>            Severity: Minor
>
> It looks like gcc 7 includes a {{format-truncation}} warning which becomes an error in devmode.  The error occurs in many files, the following is from main/asterisk.c:
> {noformat}
> gcc -o /dev/null -c asterisk.i -pthread -I/home/cfarrell/code/asterisk/master/include    -I/usr/include/libxml2  -pipe -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -g3 -Werror -Wunused -Wdeclaration-after-statement -Wtrampolines -Wundef -Wmissing-format-attribute -Wformat=2  -O0  -march=native -I. -Ieditline -DAST_MODULE=\"core\" -DAST_IN_CORE  -O3
> asterisk.c: In function ‘ast_readconfig’:
> asterisk.c:3511:65: error: ‘/monitor’ directive output may be truncated writing 8 bytes into a region of size between 1 and 4096 [-Werror=format-truncation=]
>   snprintf(cfg_paths.monitor_dir, sizeof(cfg_paths.monitor_dir), "%s/monitor", cfg_paths.spool_dir);
>                                                                  ^~~~~~~~~~~~
> asterisk.c:3511:2: note: ‘snprintf’ output between 9 and 4104 bytes into a destination of size 4096
>   snprintf(cfg_paths.monitor_dir, sizeof(cfg_paths.monitor_dir), "%s/monitor", cfg_paths.spool_dir);
>   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> asterisk.c:3512:69: error: ‘/recording’ directive output may be truncated writing 10 bytes into a region of size between 1 and 4096 [-Werror=format-truncation=]
>   snprintf(cfg_paths.recording_dir, sizeof(cfg_paths.recording_dir), "%s/recording", cfg_paths.spool_dir);
>                                                                      ^~~~~~~~~~~~~~
> asterisk.c:3512:2: note: ‘snprintf’ output between 11 and 4106 bytes into a destination of size 4096
>   snprintf(cfg_paths.recording_dir, sizeof(cfg_paths.recording_dir), "%s/recording", cfg_paths.spool_dir);
>   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> make[1]: *** [/home/cfarrell/code/asterisk/master/Makefile.rules:135: asterisk.o] Error 1
> make[1]: Leaving directory '/home/cfarrell/code/asterisk/master/main'
> make: *** [Makefile:367: main] Error 2
> {noformat}
> I receive this error with all modes of {{DONT_OPTIMIZE}} and {{DOUBLE_COMPILE}}.



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