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Top Forums UNIX for Dummies Questions & Answers Build Error: error: dereferencing pointer to incomplete type Post 302307896 by quirkasaurus on Thursday 16th of April 2009 03:00:42 PM
Old 04-16-2009
omg -- this is actual open source code? that's amazing.

Well -- one error at a time. Fix one -- on to the next.
That first suggestion did what it was supposed to do.

This statement:
Code:
iphdr = (struct iphdr *)((char *)ethhdr + sizeof(struct ethhdr));

Is complete insane. It's relying on typecasting a pointer of a structure,
jumping over the size of itself and assuming that the next spot in memory
is a pointer to iphdr. This simply is dreaming. Although it ~could~ happen,
given that the compiler writer places his variables on after the other in
memory but if it did... that means that the memory must've been explicitly
declared somewhere and if so... why not explicitly cast that memory here?

But whatever. The same problem exists, more or less. But to get it to compile,
try this:


Code:
iphdr = (struct iphdr *)((long)&ethhdr + (long)sizeof(struct ethhdr));

or:

Code:
iphdr = (void *)((long)&ethhdr + (long)sizeof(struct ethhdr));

good luck with this!
 

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SoPathList(3)							       Coin							     SoPathList(3)

NAME
SoPathList - The SoPathList class is a container for pointers to SoPath objects. As this class inherits SoBaseList, referencing and dereferencing will default be done on the objects at append(), remove(), insert() etc. SYNOPSIS
#include <Inventor/lists/SoPathList.h> Inherits SoBaseList. Public Member Functions SoPathList (void) SoPathList (const int size) SoPathList (const SoPathList &pl) ~SoPathList () void append (SoPath *const path) SoPath * operator[] (const int i) const SoPathList & operator= (const SoPathList &pl) int findPath (const SoPath &path) const void sort (void) void uniquify (void) Detailed Description The SoPathList class is a container for pointers to SoPath objects. As this class inherits SoBaseList, referencing and dereferencing will default be done on the objects at append(), remove(), insert() etc. Constructor &; Destructor Documentation SoPathList::SoPathList (void) Default constructor. SoPathList::SoPathList (const intsize) Constructor with a hint about the number of elements the list will hold. See also: SoBaseList::SoBaseList(const int) SoPathList::SoPathList (const SoPathList &pl) Copy constructor. Does a shallow copy of the SoPath pointer values, but updates reference count. See also: SoBaseList::SoBaseList(const SoBaseList &) SoPathList::~SoPathList () Destructor. See also: SoBaseList::~SoBaseList() Member Function Documentation void SoPathList::append (SoPath *constpath) Append ptr to the list. See also: SoBaseList::append() SoPath * SoPathList::operator[] (const inti) const Return node pointer at index i. See also: SoBaseList::operator[]() Reimplemented from SoBaseList. SoPathList & SoPathList::operator= (const SoPathList &pl) Shallow copy of contents of list pl to this list. See also: SoBaseList::operator=() int SoPathList::findPath (const SoPath &path) const Find and return index of first item equal to path. void SoPathList::sort (void) Sort paths in list according to how early they are run into when traversing the scene graph. void SoPathList::uniquify (void) Removes identical paths and paths that go through the tail of another path. Note that this method assumes the list to be in a sorted order. See also: sort() Author Generated automatically by Doxygen for Coin from the source code. Version 3.1.3 Wed May 23 2012 SoPathList(3)
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