blob: 56fafcf98dd81284c095ad2a37422b20734e7e60 (
plain)
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
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// { dg-do run }
// { dg-options "-w" }
// Copyright (C) 1999, 2000 Free Software Foundation, Inc.
// Contributed by Nathan Sidwell 6 Jun 1999 <nathan@acm.org>
// We cannot catch an ambiguous base class.
// -- public, << private, == virtual
// D--B--A
// +--C<<A
struct A { int m; virtual ~A(){}};
struct B : A { int m; };
struct C : private A { int m; };
struct D : B, C { int m; };
void fna(A *obj) { throw obj; }
void fnb(B *obj) { throw obj; }
void fnc(C *obj) { throw obj; }
void fnd(D *obj) { throw obj; }
extern "C" void abort();
void check(D *d)
{
int caught;
// try with whole object
caught = 0;
try { fnd(d); }
catch(A *p) { abort(); } // A is ambiguous
catch(D *p) { caught = 1; if (p != d) abort();}
catch(...) { abort(); }
if (!caught) abort();
caught = 0;
try { fnd(d); }
catch(A *p) { abort(); } // A is ambiguous
catch(B *p) { caught = 1; if (p != d) abort();}
catch(...) { abort(); }
if (!caught) abort();
caught = 0;
try { fnd(d); }
catch(A *p) { abort(); } // A is ambiguous
catch(C *p) { caught = 1; if (p != d) abort();}
catch(...) { abort(); }
if (!caught) abort();
// try with an A object
caught = 0;
try { fna((B *)d); }
catch(B *p) { abort(); } // throw type is static type
catch(A *p) { caught = 1; if (p != (B *)d) abort();}
catch(...) { abort(); }
if (!caught) abort();
caught = 0;
try { fna((A *)(C *)d); }
catch(C *p) { abort(); } // throw type is static type
catch(A *p) { caught = 1; if (p != (A *)(C *)d) abort();}
catch(...) { abort(); }
if (!caught) abort();
// try with B object
caught = 0;
try { fnb((B *)d); }
catch(A *p) { caught = 1; if (p != (B *)d) abort();}
catch(...) { abort(); }
if (!caught) abort();
caught = 0;
try { fnb((B *)d); }
catch(B *p) { caught = 1; if (p != d) abort();}
catch(...) { abort(); }
if (!caught) abort();
caught = 0;
try { fnb((B *)d); }
catch(C *p) { abort(); }
catch(D *p) { abort(); }
catch(...) { caught =1; }
if (!caught) abort();
// try with C object
caught = 0;
try { fnc((C *)d); }
catch(A *p) { abort();}
catch(C *p) { caught = 1; if (p != d) abort();}
catch(...) { abort(); }
if (!caught) abort();
caught = 0;
try { fnc((C *)d); }
catch(B *p) { abort(); }
catch(D *p) { abort(); }
catch(...) { caught =1; }
if (!caught) abort();
return;
}
int main ()
{
D d;
check (&d); // try with an object
check ((D *)0); // try with no object
return 0;
}
|
