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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [testsuite/] [g++.old-deja/] [g++.other/] [overcnv2.C] - Rev 12
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// { dg-do assemble }
// { dg-options "-Wconversion" }
// Test that we resolve this case as mandated by the standard, but also
// warn about it. We choose op char* not because it is a member of B --
// the standard says that all conversion ops are treated as coming from
// the type of the argument -- but because it is non-const.
struct A {
operator const char *() const { return ""; }
};
struct B : public A {
operator char *() { return 0; }
};
int main()
{
B b;
if ((const char *)b != 0) // { dg-warning "" } surprising overload resolution
return 1;
if ((const char *)(const B)b == 0)
return 2;
if ((const char *)(const B &)b == 0)
return 3;
}