1 // { dg-do run } 2 // { dg-options "-w" } 3 // Copyright (C) 1999, 2000 Free Software Foundation, Inc. 4 // Contributed by Nathan Sidwell 6 Jun 1999 <nathan (at) acm.org> 5 6 // We cannot catch an ambiguous base class. 7 // -- public, << private, == virtual 8 9 // D--B--A 10 // +--C<<A 11 12 13 struct A { int m; }; 14 struct B : A { int m; }; 15 struct C : private A { int m; }; 16 struct D : B, C { int m; }; 17 18 void fna(A *obj) { throw obj; } 19 void fnb(B *obj) { throw obj; } 20 void fnc(C *obj) { throw obj; } 21 void fnd(D *obj) { throw obj; } 22 23 extern "C" void abort(); 24 25 void check(D *d) 26 { 27 int caught; 28 29 // try with whole object 30 caught = 0; 31 try { fnd(d); } 32 catch(A *p) { abort(); } // A is ambiguous 33 catch(D *p) { caught = 1; if (p != d) abort();} 34 catch(...) { abort(); } 35 if (!caught) abort(); 36 37 caught = 0; 38 try { fnd(d); } 39 catch(A *p) { abort(); } // A is ambiguous 40 catch(B *p) { caught = 1; if (p != d) abort();} 41 catch(...) { abort(); } 42 if (!caught) abort(); 43 44 caught = 0; 45 try { fnd(d); } 46 catch(A *p) { abort(); } // A is ambiguous 47 catch(C *p) { caught = 1; if (p != d) abort();} 48 catch(...) { abort(); } 49 if (!caught) abort(); 50 51 // try with an A object 52 caught = 0; 53 try { fna((B *)d); } 54 catch(B *p) { abort(); } // throw type is static type 55 catch(A *p) { caught = 1; if (p != (B *)d) abort();} 56 catch(...) { abort(); } 57 if (!caught) abort(); 58 59 caught = 0; 60 try { fna((A *)(C *)d); } 61 catch(C *p) { abort(); } // throw type is static type 62 catch(A *p) { caught = 1; if (p != (A *)(C *)d) abort();} 63 catch(...) { abort(); } 64 if (!caught) abort(); 65 66 // try with B object 67 caught = 0; 68 try { fnb((B *)d); } 69 catch(A *p) { caught = 1; if (p != (B *)d) abort();} 70 catch(...) { abort(); } 71 if (!caught) abort(); 72 73 caught = 0; 74 try { fnb((B *)d); } 75 catch(B *p) { caught = 1; if (p != d) abort();} 76 catch(...) { abort(); } 77 if (!caught) abort(); 78 79 caught = 0; 80 try { fnb((B *)d); } 81 catch(C *p) { abort(); } 82 catch(D *p) { abort(); } 83 catch(...) { caught =1; } 84 if (!caught) abort(); 85 86 caught = 0; 87 try { fnc((C *)d); } 88 catch(A *p) { abort();} 89 catch(C *p) { caught = 1; if (p != d) abort();} 90 catch(...) { abort(); } 91 if (!caught) abort(); 92 93 caught = 0; 94 try { fnc((C *)d); } 95 catch(B *p) { abort(); } 96 catch(D *p) { abort(); } 97 catch(...) { caught =1; } 98 if (!caught) abort(); 99 100 return; 101 } 102 103 int main () 104 { 105 D d; 106 check (&d); // try with an object 107 check ((D *)0); // try with no object 108 109 return 0; 110 } 111
