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[SQRAT] GCC 4.6.1 compilation fails
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Shikken
#1 Posted : Saturday, July 07, 2012 10:45:00 AM(UTC)
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Posts: 4
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Hello,
i've come up with a problem recently

Code:
class BaseClass
{
public:
    int baseVariable;
};

class TestClass : public BaseClass
{
public:
    int testVar;
};

Class<TestClass> testClass(vm);
testClass.Var("testVar", &TestClass::testVar); // works
testClass.Var("baseVariable", &TestClass::baseVariable); // isn't working


The problem is that gcc is not accepting variables and functions from inherited classes, im using TDM-GCC 4.6.1-tdm64-1 and 4.7.1 on linux.
Gcc gives me this error while compiling:
Code:

error: no matching function for call to 'Sqrat::Class<TestClass>::Var(const char [13], int BaseClass::*)'
./Test.cpp:12:43: note: candidate is:
..\Squirrel/sqrat/sqrat/sqratClass.h:126:46: note: template<class V> Sqrat::Class& Sqrat::Class::Var(const SQChar*, V C::*) [with V = V, C = TestClass, A = Sqrat::
DefaultAllocator<TestClass>, Sqrat::Class<C, A> = Sqrat::Class<TestClass>, SQChar = char]


It's worth noting that above code compiles fine in Microsoft Visual C++ 2008, unofortunetly i need it on linux.

Is there any way to fix or workaround this?
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atai
#2 Posted : Sunday, July 08, 2012 5:18:32 PM(UTC)
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What version of SQRat are you using?
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Shikken
#3 Posted : Monday, July 09, 2012 9:05:59 PM(UTC)
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0.8.2
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atai
#4 Posted : Wednesday, July 11, 2012 6:59:50 AM(UTC)
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OK, with gcc 4.6.3 on Fedora 16 x86-64, the following code works

C++
Code:

class BaseClass
{
public:
    int baseVariable;
    void print()
    {
        printf("base var: %d\n", baseVariable);
    }
   
};

class TestClass : public BaseClass
{
public:
    int testVar;
    void print()
    {
        printf("test var: %d\n", testVar);
        BaseClass::print();
    }
};


static int bind(HSQUIRRELVM vm)
{

    Class<TestClass> testClass(vm);
    testClass.Var("testVar", &TestClass::testVar); // works

    testClass.Var("baseVariable", (int TestClass::*)&BaseClass::baseVariable); // works
   
    testClass.Func("print", &TestClass::print);

    RootTable(vm).Bind("TestClass", testClass);
       
    return 1;
}




Squirrel
Code:

local t =  TestClass();

t.baseVariable = 22;
t.testVar = 33;

t.print();


prints

Code:

[atai]$ ./test  t3.nut
test var: 33
base var: 22


Shikken wrote:
Hello,
i've come up with a problem recently

Code:
class BaseClass
{
public:
    int baseVariable;
};

class TestClass : public BaseClass
{
public:
    int testVar;
};

Class<TestClass> testClass(vm);
testClass.Var("testVar", &TestClass::testVar); // works
testClass.Var("baseVariable", &TestClass::baseVariable); // isn't working


The problem is that gcc is not accepting variables and functions from inherited classes, im using TDM-GCC 4.6.1-tdm64-1 and 4.7.1 on linux.
Gcc gives me this error while compiling:
Code:

error: no matching function for call to 'Sqrat::Class<TestClass>::Var(const char [13], int BaseClass::*)'
./Test.cpp:12:43: note: candidate is:
..\Squirrel/sqrat/sqrat/sqratClass.h:126:46: note: template<class V> Sqrat::Class& Sqrat::Class::Var(const SQChar*, V C::*) [with V = V, C = TestClass, A = Sqrat::
DefaultAllocator<TestClass>, Sqrat::Class<C, A> = Sqrat::Class<TestClass>, SQChar = char]


It's worth noting that above code compiles fine in Microsoft Visual C++ 2008, unofortunetly i need it on linux.

Is there any way to fix or workaround this?
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Shikken
#5 Posted : Wednesday, July 11, 2012 8:34:45 PM(UTC)
Rank: Newbie

Groups: Registered
Joined: 6/27/2012(UTC)
Posts: 4
Location: Poland

Thanks: 1 times
Was thanked: 0 time(s) in 0 post(s)
It works! Thank you very much!
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