我segmentation fault
在尝试使用 aunique_ptr
创建派生类的实例时遇到了问题。之前,我一个接一个地编写了七个派生类的每个实例化代码,并且代码工作正常。
当前代码如下:
typedef std::unique_ptr<Comum> ComumPtr;
ComumPtr createInstance ( string dom, map<string, string> & config, map<string, string> & config_fields )
{
ComumPtr ptr; // initialized to nullptr.
if ( dom == "voice" ) {
ptr.reset ( new Voice (config, config_fields) );
// } else if ( dom == "account" ) { // FOR OTHER DERIVED CLASSES
// ptr.reset ( new Account (config, config_fields) );
}
return ptr;
}
// At main function:
for (vector<string>::const_iterator cit = for_domain.begin(); cit != for_domain.end(); ++cit) {
const char * section (cit->c_str());
string fsn = *cit + "_fields";
const char * fields_section_name (fsn.c_str());
const char * db_section ("Database");
map <string, string> domain_config = cfg.getSectionConfig (config_file.c_str(), section);
map <string, string> domain_config_fields = cfg.getSectionConfig (config_file.c_str(), fields_section_name);
map <string, string> database_config = cfg.getSectionConfig (config_file.c_str(), db_section);
std::unique_ptr<Comum> domain = createInstance(*cit, domain_config, domain_config_fields);
domain->readDatabaseFields (database_config); // <- segmentation fault
您认为有什么理由会导致故障吗?