Apperantly, Working Dir is directory with result executable binary file.
For example, my directory with executable file is "~/project/bin/build-x/".

If the xml file also placed in this directory, I can load it using this code:
gameResources.loadXML("resources.xml");

If I place the xml file in the directory "~/project/bin/", I can load it using this code:
gameResources.loadXML("../resources.xml");

But if I place the xml file in the directory "~/project/", I can't load it using this:
gameResources.loadXML("../../resources.xml");
Consequently, I can't load the xml file if it placed in any of a child directory of "~/project/", for example "~/project/data" or similar.

Log with errors in this case:
054 error: can't read file: resources.xml to buffer
054 error: can't load xml file: '../../resources.xml'
054 error: Assert! !"can't find xml file"

Hello,
I have one problem with loading game resources.

If I try to load an xml file, located in current or parent directory using relative path, file will be loaded:
Resources gameResources;
gameResources.loadXML("../resources.xml");

But if I try to load an xml file, located in a directory that hierarchically above than parent using relative path, file will not be loaded:
Resources gameResources;
gameResources.loadXML("../../resources.xml");

If I use absolute path, file will be loaded successfully anywhere.
Can I solve this problem without using getcwd() or similar function?