When I run the PC lint application for the below mentioned code I get errors:
The errors for line (1) are
Error 129: declaration expected, identifier '__created' ignored
Error 10: Expecting identifier or other declarator
Error 129: declaration expected, identifier 'typename' ignored
template<typename T,UINT32 capacity> //(1)
class A
{
public:
A();
T *alloc();
T *free( T *ptr);
//Private members
private:
T *m_headPtr;
T m_pool[capacity];
}
How can I get rid of the errors?
Save the file as a C++ file with the correct ending or tell lint to treat it as such, currently, it seems to be treated as a C file.
Adding +fcp to the build command solved my problem
Related
In a CDialog class I needed to override
Using VS2008 I've done this several times before using the IDE properties/override and it adds adding this code:
virtual BOOL PreTranslateMessage(MSG* pMsg); // in the header file
BOOL CMyTestDlg::PreTranslateMessage(MSG* pMsg) // in the cpp file
{
return CDialog::PreTranslateMessage(pMsg);
}
The compiler complains with these messages:
error C2059: syntax error : 'constant'
error C2065: 'pMsg' : undeclared identifier
error C2448: 'CMy_TestDlg::PreTranslateMessage' : function-style initializer appears to be a function definition
If I removed the PreTranslateMessage stuff the project compiles and runs as expected.
As the IDE added the override code I'm confused as to what I did wrong, so
I made another simpler Project and did the override in it, and it compiles OK.
I'm working on an assignment but I can't figure out why I'm getting these errors:
Error 1 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Error 2 error C2143: syntax error : missing ',' before '&'
Its referring to this line of code
ISBN ( const char* str, const ISBNPrefix &list );
ISBNPrefix is another class in a separate header file, and my professor/school tells us not to change the requirements of the assignment. I just don't understand why I'm getting those 2 errors.
Can anyone clarify?
Forward declaration was needed.
class ISBNPrefix;
class ISBN
{
etc, etc.
};
Error 1 means the compiler sees the line of code as a function declaration without a return type. Maybe you meant
ISBN::ISNB(...);
or
void ISBN(...);
Have you included the other file with #include "otherfile.h" ?
I was implementing boost::intrusive for one of my project on visual C++ 2008 and i stumbled upon a problem. i am using splay hooks for splay_multiset containers. I have defined splay hook publically under MyClass (code below).
#include <boost/intrusive/unordered_set.hpp>
#include <boost/intrusive/splay_set.hpp>
#include <iostream>
using namespace boost::intrusive;
class MyClass
{
int int_;
public:
MyClass(int i)
: int_(i)
{}
splay_set_member_hook<link_mode<normal_link> > memberSplayHook;
//**OPTION-1**
//PROBLEM CODE SEGMENT ++
//typedef member_hook<MyClass, splay_set_member_hook<link_mode<normal_link> >, &MyClass::memberSplayHook> MemberOption;
//typedef splay_multiset<MyClass, MemberOption> MemberMultiSet;
//PROBLEM CODE SEGMENT --
MemberMultiSet mmset;
};
//**OPTION-2**
//WORKING CODE SEGMENT ++
typedef member_hook<MyClass, splay_set_member_hook<link_mode<normal_link> >, &MyClass::memberSplayHook> MemberOption;
typedef splay_multiset<MyClass, MemberOption> MemberMultiSet;
//WORKING CODE SEGMENT --
int main()
{
return 0;
}
The problem is, to use splay_multiset, whatever option i choose (either option-1 or 2, mention in code), in both cases i see compilation errors.
When Option-1 is enabled (option-2 is commented), i see errors below:
1>d:\projects\sampleproject\sample.cpp(21) : error C2327: 'MyClass::memberSplayHook' : is not a type name, static, or enumerator
1>d:\projects\sampleproject\sample.cpp(21) : error C2065: 'memberSplayHook' : undeclared identifier
1>d:\projects\sampleproject\sample.cpp(22) : error C3203: 'member_hook' : unspecialized class template can't be used as a template argument for template parameter 'O1', expected a real type
While, when Option-2 is enabled (option-1 is commented out), i dont see undeclared identifier error msg as these errors coming with option-1. But i do see errors like below (which are obvious).
1>d:\projects\sampleproject\sample.cpp(25) : error C2146: syntax error : missing ';' before identifier 'mmset'
1>d:\projects\sampleproject\sample.cpp(25) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
My question is why i am getting error in first case? What can i do to get pass this issue?
Boost member hooks have (always?) been broken, since they don't compile with Visual C++.
I don't have a VS at hand to check for the precise error message so I might be wrong (but reading 'member hooks' and 'Visual C++' always triggers 'there's a problem'-mode), but do try to check this:
http://permalink.gmane.org/gmane.comp.lib.boost.user/56875
EDIT: Don't take the headline literally -- the same applies to Visual C++ 2010 and 2012. All my member hooks use this workaround; at some point I might even try to understand what it does, or more importantly, how to package it into a more comfortable setup for less "I need to find a previous implementation of this workaround so I can copy-and-modify it"...
I'm using Visual Studio 2008 Express Edition to compile the following code in a header file:
bool is_active(widget *w);
widget is defined earlier as,
typedef void widget;
The compiler complains with the error:
>c:\projects\engine\engine\engine.h(451) : error C2061: syntax error : identifier 'is_active'
1>c:\projects\engine\engine\engine.h(451) : error C2059: syntax error : ';'
1>c:\projects\engine\engine\engine.h(451) : error C2059: syntax error : 'type'
I get similar errors for all other functions returning bool.
NB. The following compiles fine:
void widget_activate_msg(widget *g, message *msg);
Why would this give a compiler error?
Some people have requested I post the code - here it is:
Line 449: widget * widget_new_from_resource(int resource_id);
Line 450: void widget_delete_one(widget *w);
Line 451: bool is_active(widget *w);
EDIT - this is now fixed:
#BatchyX commented below about whether I was using C or C++. What I didn't know was that Visual C++ 2008 will compile any file by default (but you can override this setting ) with the .c extension as C and those with .cpp as C++. ( the error was caused when compiling a .c file including "Engine.h" ).
Most likely, something above this line has a syntax error. Did you forget }s or ; after a class declaration ?
Also make sure you are using C++ and not C. C doesn't have a bool type. If you're using C, then use an int instead.
I'm guessing that it's not possible to typedef void. Why not use typdef void* WidgetPtr; and then bool is_active(WidgetPtr w);
EDIT: Having done some tests it's clear that void can be typedef'd and it can be part of the function signature as shown in the users code. So the only other solution is that whichever header has declared typedef void Widget is not included within the file that declares/defines the function or you're having a #def guard statement clash.
I just reorganized the code for a project and now I'm getting errors I can't resolve. This header is included by a .cpp file trying to compile.
#include "WinMain.h"
#include "numDefs.h"
#include <bitset>
class Entity
{
public:
Entity();
virtual ~Entity();
virtual bitset<MAX_SPRITE_PIXELS> getBitMask();
virtual void getMapSection(float x, float y, int w, int h, bitset<MAX_SPRITE_PIXELS>* section);
};
I'm getting these compiler errors for the declaration of Entity::getBitMask():
error C2143: syntax error : missing ';' before '<'
error C2433: 'Entity::bitset' : 'virtual' not permitted on data declarations
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
error C2238: unexpected token(s) preceding ';'
There are more similar errors for the next line as well. It seems like bitset isn't getting included but it clearly is? I can't figure out what's going wrong. WinMain.h includes windows.h, and numDefs.h includes nothing.
Using MS Visual C++ 2008.
Declare the bitset as std::bitset<MAX_SPRITE_PIXELS>.
The bitset template is defined in the std:: namespace, so you either need to reference it by it's full name std::bitset or add using namespace std; somewhere before the class declaration.
I think you need to say std::bitset.
Looks like an error in "numDefs.h"