Re: template error messages
"Arnaud Debaene" wrote:
If I change sligthly your code so that "T" is a class :
int main()
{
S<std::string> s;
s.F();
return 0;
}
then I get another error message:
1>d:\users\adb\dev\temp\test_vc_2005\test_vc_2005.cpp(11)
: error
C2039: 'F' : is not a member of
'std::basic_string<_Elem,_Traits,_Ax>'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>,
1> _Ax=std::allocator<char>
1> ]
1>
d:\users\adb\dev\temp\test_vc_2005\test_vc_2005.cpp(11)
:
while compiling class template member function 'void
S<T>::F(void)'
1> with
1> [
1> T=std::string
1> ]
1>
d:\users\adb\dev\temp\test_vc_2005\test_vc_2005.cpp(17)
: see
reference to class template instantiation 'S<T>' being
compiled
1> with
1> [
1> T=std::string
1> ]
Although those errors are quite (too) long, thay are
quite clear (at
least for template related stuff....)
I don't think so. There's still no reference at all to
the s.F(); line,
it only points out the S<std::string> s; line. If those
two weren't
next to each other, I'd be in trouble finding where
S<std::string>::F()
is referenced.
[...]
But in order to know where the error comes from, you need
to go to the bottom of the "instanciation stack", which is
at the very end of the compiler message. In our case, this
last line is
"d:\users\adb\dev\temp\test_vc_2005\test_vc_2005.cpp(17)"
which is indeed the calling of s.F();
No, last part of error message refers to the point of S<T>
instantiation. It is unclear from compiler message were the
call to S<T>::F() happens. However, I agree that rest of the
message is good and it's quite easy, knowing all ingredients
of the error, to find out all calls to S<T>::F() within
offending translation unit.
Alex