http://llvm.org/bugs/show_bug.cgi?id=8640
Summary: template diagnostic does not show point of error
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Clang should go to the root of template instantiations when virtual functions
are instantiated on 'new'. Here's the testcase:
template<class T1> struct C1 {
virtual void c1() {
T1 t1 = 3;
}
};
template<class T2> struct C2 {
void c2() {
new C1<T2>();
}
};
void f() {
C2<int*> c2;
c2.c2(); // error here
}
which produces the following errors:
$ clang++ -fsyntax-only b3205969.cc
b3205969.cc:3:7: error: cannot initialize a variable of type 'int *' with an
rvalue of type 'int'
T1 t1 = 3;
^ ~
b3205969.cc:9:8: note: in instantiation of member function 'C1<int *>::c1'
requested here
new C1<T2>();
^
1 error generated.
Note how we don't actually trace all the way through to the site of the problem
in f(). If you instead changed c1() to be non-virtual then add a call to c1 in
c2() then you would get a note on the line marked "error here" as we expect.
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