When I used ini_free ,I still got a segment error.

[helintongh]

Program received signal SIGSEGV, Segmentation fault.
0x0000000000402964 in ini_get (ini=0x0, section=0x42b5eb "syslog", key=0x42b5e0 "serverAddr")
at CloudWaf/src/dt/modules/sign_check/ini.c:233
233 char *p = ini->data;
Missing separate debuginfos, use: debuginfo-install glibc-2.17-292.el7.x86_64 libgcc-4.8.5-39.el7.x86_64 libstdc++-4.8.5-39.el7.x86_64

[rxi]

As stated in the README, you should check the value returned by ini_load() to make sure it is not NULL:

An ini file can be loaded into memory by using the ini_load() function. NULL is returned if the file cannot be loaded.