Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.old-deja/g++.other/overcnv2.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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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 "choosing 'B" "B" } surprising overload resolution // { dg-warning "for conversion" "conv" { target *-*-* } .-1 } // { dg-message "note" "note" { target *-*-* } .-2 } return 1; if ((const char *)(const B)b == 0) return 2; if ((const char *)(const B &)b == 0) return 3; }