[asterisk-bugs] [JIRA] (ASTERISK-27181) GCC 7 warning: app_voicemail.c: In function 'imap_delete_old_greeting'

[Anthony Messina (JIRA)]

Anthony Messina created ASTERISK-27181:
------------------------------------------

             Summary: GCC 7 warning: app_voicemail.c: In function 'imap_delete_old_greeting'
                 Key: ASTERISK-27181
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27181
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Applications/app_voicemail/IMAP
    Affects Versions: 15.0.0-beta1
         Environment: Fedora 26 x86_64, gcc-7.1.1-3.fc26.x86_64
            Reporter: Anthony Messina
            Severity: Minor


Warning when compiling

{code}
gcc  -o app_directory.so -pthread -m64 -Wl,--as-needed,--library-path=/usr/lib64 -Wl,-z,relro     -shared -Wl,--version-script,app_directory.exports,--warn-common  app_directory.o  
app_voicemail.c: In function 'imap_delete_old_greeting':
app_voicemail.c:8918:17: warning: '__builtin___sprintf_chk' may write a terminating nul past the end of the destination [-Wformat-overflow=]
    sprintf(arg, "%d", i + 1);
                 ^~~~
In file included from /usr/include/stdio.h:939:0,
                 from /builddir/build/BUILD/asterisk-15.0.0-beta1/include/asterisk/compat.h:49,
                 from /builddir/build/BUILD/asterisk-15.0.0-beta1/include/asterisk.h:22,
                 from app_voicemail.c:83:
/usr/include/bits/stdio2.h:33:10: note: '__builtin___sprintf_chk' output between 2 and 11 bytes into a destination of size 10
   return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       __bos (__s), __fmt, __va_arg_pack ());
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{code}



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