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Error Field Has Incomplete Type

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Error Field Has Incomplete Type Struct

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Error Aggregate Has Incomplete Type

community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up C: field has incomplete type up vote 3 down vote favorite I apologise if this has been previously asked. I am getting the following error while compiling through make: .../inc/intModIp.h:418: error: field 'cnc_id' error aggregate has incomplete type and cannot be defined has incomplete type ../inc/intModIp.h:419: error: field 'cnc_key' has incomplete type ../inc/intModIp.h:421: error: field 'fin_id' has incomplete type ../inc/intModIp.h:422: error: field 'fin_key' has incomplete type ../inc/intModIp.h:424: error: field 'remote_id' has incomplete type ../inc/intModIp.h:426: error: field 'cnc_ipsec_peer' has incomplete type ../inc/intModIp.h:427: error: field 'fin_ipsec_peer' has incomplete type ../inc/intModIp.h:428: error: field 'remote_ipsec_peer' has incomplete type ../inc/intModIp.h:430: error: field 'cnc_link' has incomplete type ../inc/intModIp.h:431: error: field 'cnc_esp' has incomplete type ../inc/intModIp.h:433: error: field 'fin_link' has incomplete type ../inc/intModIp.h:434: error: field 'fin_esp' has incomplete type Respective code in the header file is as follows: #if 1 || defined(SYMB_IPSEC) struct ipsec_state { int enabled; int active; int timer; /* IPSEC_SOCKET_STATES */ struct ipsec_id cnc_id; struct ipsec_priv_key cnc_key; struct ipsec_id fin_id; struct ipsec_priv_key fin_key; struct ipsec_id remote_id; struct ipsec_peer cnc_ipsec_peer; struct ipsec_peer fin_ipsec_peer; struct ipsec_peer remote_ipsec_peer; struct ipsec_ike_link cnc_link; struct ipsec_esp_sa cnc_esp; struct ipsec_ike_link fin_link; struct ipsec_esp_sa fin_esp; } ipsec; #endif could someone please help me with this. Please let me know if a

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn error anonymous has incomplete type more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users error field st_atim has incomplete type Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping field has incomplete type struct each other. Join them; it only takes a minute: Sign up How to fix an “field has incomplete type” error when using a forward declaration up vote 2 down vote favorite 1 This code throws the compiler error http://stackoverflow.com/questions/17291268/c-field-has-incomplete-type error: field ‘fTarget’ has incomplete type as noted in the comments. Why is this happening? I'm only assigning that field and not doing any operations that would need to know what is inside... or am I? Maybe it can't figure out the copy constructor? class FSRVertex; //fwd class FSREdge { public: char fC; FSRVertex fTarget; //compiler error FSREdge(char c, FSRVertex target) : fC(c), fTarget(target) {} //compiler error }; class FSRVertex { public: boost::unordered_map fOutEdges; FSRVertex() http://stackoverflow.com/questions/26637879/how-to-fix-an-field-has-incomplete-type-error-when-using-a-forward-declaration : fOutEdges() {} }; c++ incomplete-type share|improve this question asked Oct 29 '14 at 18:20 marathon 1,62442867 add a comment| 3 Answers 3 active oldest votes up vote 3 down vote accepted To have an FSRVertex object as a member of your class, the compiler needs to know its size, and so needs to see its full definition. Either provide the full definition for your class, or you can store a pointer (preferably smart pointer) to a dynamically allocated copy of the object performed in the constructor. You will need to move the constructor body outside the class to a place where the full definition is provided. This approach is less efficient at run-time. share|improve this answer answered Oct 29 '14 at 18:24 Neil Kirk 13.8k22052 A reference would be fine too. –black Oct 29 '14 at 18:37 1 @black reference won't be fine in general as will change ownership. –Slava Oct 29 '14 at 18:39 @Slava That's another thing. I just wanted to point out that a reference would solve that as well, not whether is advisable to do so or not. –black Oct 29 '14 at 19:06 2 @black technically yes that would fix issue with forward declaration. But for this specific example using reference would not be a good answer IMHO –Slava Oct 29 '14 at 19:10 add

Get Kubuntu Get Xubuntu Get Lubuntu Get UbuntuStudio Get Mythbuntu Get Edubuntu Get Ubuntu-GNOME Get UbuntuKylin Ubuntu Code of Conduct Ubuntu https://ubuntuforums.org/showthread.php?t=1673733 Wiki Community Wiki Other Support Launchpad Answers Ubuntu IRC Support AskUbuntu http://www.cplusplus.com/forum/general/72117/ Official Documentation User Documentation Social Media Facebook Twitter Useful Links Distrowatch Bugs: Ubuntu PPAs: Ubuntu Web Upd8: Ubuntu OMG! Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Specialised Support Development & Programming Programming Talk has incomplete Field has incomplete type Having an Issue With Posting ? Do you want to help us debug the posting issues ? < is the place to report it, thanks ! Results 1 to 2 of 2 Thread: Field has incomplete type Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch has incomplete type to Threaded Mode January 23rd, 2011 #1 cguy View Profile View Forum Posts Private Message Frothy Coffee! Join Date Jan 2009 Beans 237 DistroKubuntu 10.10 Maverick Meerkat Field has incomplete type This is the code: Code: struct directory; typedef struct directory directory_t; typedef struct file { char name[256]; unsigned long size; date_t created; date_t modified; directory_t parent; <---------- This line is troublesome }file_t; struct directory { char name; struct directory *parent; date_t created; date_t modified; }; and this is the compilation error: Code: error: field 'parent' has incomplete type But I declared the second structure's prototype and then declared a type definition. Why do I still get an error? Adv Reply January 23rd, 2011 #2 worksofcraft View Profile View Forum Posts Private Message Cake for coffee's sake Join Date Sep 2007 Location Christchurch, New Zealand Beans 1,328 DistroUbuntu Re: Field has incomplete type Originally Posted by cguy This is the code: Code: struct directory; typedef struct directory directory_t; typedef struct file { char name[256]; unsigned long size; date_t created; date

is: field 'm_advArray1' has incomplete type This is my code. As you can see, I try to compose my MainClass of another class PieceClass1. 1
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#ifndef COMPOSITIONCLASSES_H #define COMPOSITIONCLASSES_H #include using namespace std; class PieceClass1; class MainClass { private: int m_value1; const int m_value2; int* m_nPntr1; PieceClass1 m_advArray1; public: MainClass(int arg_m_value); ~MainClass(); }; MainClass::MainClass(int arg_m_value = 0): m_value1(arg_m_value), m_value2(arg_m_value), m_nPntr1(0) { } MainClass::~MainClass() { delete m_nPntr1; } ///////////////////////////////////////////////////// class PieceClass1 { private: int array1[5]; public: PieceClass1(int startingValue = 0); friend ostream& operator<<(ostream&, const PieceClass1&); }; PieceClass1::PieceClass1(int startingValue) { for (int i = 0; i < 5; ++i) { array1[i] = startingValue; } } ostream& PieceClass1::operator<<(ostream& output, const PieceClass1& inputClass) { for (int i = 0; i < 5; ++i) { output << inputClass.array1[i] << "\n"; } } #endif // COMPOSITIONCLASSES_H Thanks, Flurite Last edited on May 30, 2012 at 12:20am UTC May 30, 2012 at 12:29am UTC firedraco (6199) In order to create a class instance like that, the compiler needs the full definition of the class so it knows how large it needs to be. Move the definition to where you have the declaration and it should work. May 30, 2012 at 12:39am UTC Flurite (138) @firedraco, That would work if only one incorporated the other, which is what I am doing in that case. But how would I do it if both incorporated each other? May 30, 2012 at 2:04am UTC ne555 (8564) They can't. This box has our universe inside it There is no 1 to 1 relationship. They would

 

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