c++ problem setting "const char *str" from function returning a string
ProgrammingThis forum is for all programming questions.
The question does not have to be directly related to Linux and any language is fair game.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
i get no compile errors and other integer values from main.conf(not shown in posted code) get set correctly but it doesn't seem to put the string from main.conf into *mechConfig.
what am i missing?
thanks in advance
i have no idea or how to find out exactly. it is part of libconfuse which i have used for a while and seems reasonably solid.
for what its worth this works fine.
Well, I think I see the problem now (and it does have to do with memory management). All char arrays for the first config file are allocated in “sys_cfg = cfg_init(sys_opts, CFGF_NONE)” and “cfg_parse(sys_cfg, sysConfig)” (and the call to cfg_getstr(sys_cfg, "mechConf") gets you a pointer to the interally-allocated string). All this data will be deallocated by the call to cfg_free(sys_cfg). But you try to use mechConfig after this call, in which case you have a pointer to freed data.
The solution would be to move down the call to cfg_free(sys_cfg) to a line after you are done with using mechConfig.
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.