Deriving from templated classes
Lothar Braun
lothar@lobraun.de
Fri Nov 16 15:35:00 GMT 2007
Hi,
i have the following code snipplet and tried to compile it with g++ -c
main.cpp
template <class T>
class Foo
{
public:
T foo;
int bar;
};
template <class A>
class Bar : public Foo<A>
{
public:
void foobar()
{
bar++;
foo = 1;
}
};
I get the error messages (using g++ 4.1.2)
main.cpp: In member function 'void Bar<A>::foobar()':
main.cpp:15: error: 'bar' was not declared in this scope
main.cpp:16: error: 'foo' was not declared in this scope
This seems strange to me, because i think "bar" and "foo" should be within the
namespace of "class Bar". The code compiles if i substitute "bar++"
with "Foo<A>::bar++" and "foo = 1" with "Foo<A>::foo = 1".
I tried to compile the code snipplet above using compilers from diffrent
vendors (intel and m$). Both compiled the code without any errors or
warnings.
My question is: Does gcc do the right thing (tm) or should that behavior
reported as a bug? (i tried to search the bug database but wasn't able to
find anything that looked similar to the above problem).
Best regards,
Lothar
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