File: derived-to-base-ambig.cpp

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (33 lines) | stat: -rw-r--r-- 1,159 bytes parent folder | download | duplicates (12)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
// RUN: %clang_cc1 -fsyntax-only -verify %s
class A { };
class B : public A { };
class C : public A { };
class D : public B, public C { };

void f(D* d) {
  A* a;
  a = d; // expected-error{{ambiguous conversion from derived class 'D' to base class 'A':}}
}

class Object2 { };
class A2 : public Object2 { };
class B2 : public virtual A2 { };
class C2 : virtual public A2 { };
class D2 : public B2, public C2 { };
class E2 : public D2, public C2, public virtual A2 { }; // expected-warning{{direct base 'C2' is inaccessible due to ambiguity:\n    class E2 -> D2 -> C2\n    class E2 -> C2}}
class F2 : public E2, public A2 { }; // expected-warning{{direct base 'A2' is inaccessible due to ambiguity:\n    class F2 -> E2 -> D2 -> B2 -> A2\n    class F2 -> A2}}

void g(E2* e2, F2* f2) {
  Object2* o2;
  o2 = e2;
  o2 = f2; // expected-error{{ambiguous conversion from derived class 'F2' to base class 'Object2':}}
}

// Test that ambiguous/inaccessibility checking does not trigger too
// early, because it should not apply during overload resolution.
void overload_okay(Object2*);
void overload_okay(E2*);

void overload_call(F2* f2) {
  overload_okay(f2);
}