http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57599
Bug ID: 57599
Summary: g++ accepts invalid dynamic_cast of a const type to a
regular type
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: abel at gcc dot gnu.org
The following code is accepted by g++ (versions 3.3, 4.6, 4.7 at least, I
didn't check trunk) but seems to be invalid c++ and is rejected by clang 3.2,
icc 13, msvc 12:
class A {
};
class B : public A {
};
int main() {
A* a;
B* b = new B();
a = dynamic_cast<const A*>(b);
return 0;
}
An expected error is along the lines of (icc):
error: a value of type "const A *" cannot be assigned to an entity of type "A
*"
