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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/g++.old-deja/g++.other/dyncast1.C | |
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Diffstat (limited to 'gcc/testsuite/g++.old-deja/g++.other/dyncast1.C')
-rw-r--r-- | gcc/testsuite/g++.old-deja/g++.other/dyncast1.C | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.old-deja/g++.other/dyncast1.C b/gcc/testsuite/g++.old-deja/g++.other/dyncast1.C new file mode 100644 index 000000000..6feec30e6 --- /dev/null +++ b/gcc/testsuite/g++.old-deja/g++.other/dyncast1.C @@ -0,0 +1,123 @@ +// { dg-do run } +// Author: Alfred Miniarik <a8601248@unet.univie.ac.at> +// test of dynamic_cast +// runtime detecting of nonpublic +// inheritance within a cast +// and therefor failing with result 0. + +extern "C" void abort(); +extern "C" int printf (const char *, ...); + +static int errors = 0; +void error(int i) +{ + printf("Error %i\n",i); + errors++; +} + +// 1. downcast + +// 1.1. single inheritance case + +struct A {virtual ~A(){}}; +struct AA : A {}; +struct B : A {}; +struct BB : B {}; +class C : B {}; +struct D : C {}; + +struct CC : B {}; +class DD : CC {}; + +class CCC : protected B {}; +class DDD : protected CCC {}; + +void +test01 () +{ + D d; + if(dynamic_cast<D*> ((A*)&d)) error(1); + if(dynamic_cast<D*> ((B*)&d)) error(2); + if(&d != dynamic_cast<D*> ((C*)&d)) error(3); //counter example + if(dynamic_cast<C*> ((B*)&d)) error(4); + + DD dd; + if(dynamic_cast<DD*> ((A*)&dd)) error(5); + if(dynamic_cast<DD*> ((B*)&dd)) error(6); + + DDD ddd; + if(dynamic_cast<DDD*> ((A*)&ddd)) error(7); + if(dynamic_cast<DDD*> ((B*)&ddd)) error(8); + if(dynamic_cast<CCC*> ((B*)&ddd)) error(9); +} + +// 1.2. multiple inheritance case +// 1.2.1. all bases are public + +struct E : D, CC {}; +struct EE : CC, D {}; //Will search in reverse order. + +void +test02 () +{ + E e; + if(dynamic_cast<E*> ((A*)(D*)&e)) error(10); + if(dynamic_cast<E*> ((B*)(D*)&e)) error(11); + if(&e != dynamic_cast<E*> ((C*)(D*)&e)) error(12); //counter example + if(&e != dynamic_cast<E*> ((B*)(CC*)&e)) error(13); //counter example + if((CC*)&e != dynamic_cast<CC*> ((B*)(CC*)&e)) error(14); //counter example + + EE ee; + if(dynamic_cast<EE*> ((A*)(D*)&ee)) error(15); + if(dynamic_cast<EE*> ((B*)(D*)&ee)) error(16); + if(&ee != dynamic_cast<EE*> ((C*)(D*)&ee)) error(17); //counter example + if(&ee != dynamic_cast<EE*> ((B*)(CC*)&ee)) error(18); //counter example + if((CC*)&ee != dynamic_cast<CC*> ((B*)(CC*)&ee)) error(19); //counter example +} + +// 1.2.2 one or more branches are nonpublic + +struct X : private BB, E {}; +struct Y : AA, private B {}; + +class XX : BB, E {}; + +void +test03 () +{ + X x; + if(&x != dynamic_cast<X*>((B*)(CC*)(E*)&x)) error(20); //counter example + XX xx; + if(dynamic_cast<XX*>((B*)(CC*)(E*)&xx)) error(21); + Y y; + if(dynamic_cast<Y*>((B*)&y)) error (22); + if(dynamic_cast<Y*>((A*)(B*)&y)) error (23); +} + +// 2. crosscast + +struct J {virtual ~J(){}}; +struct K : CC, private J {}; +class KK : J, CC{}; + +void +test04 () +{ + E e; + if(dynamic_cast<CC*> ((B*)(D*)&e)) error(24); + if((CC*)&e != dynamic_cast<CC*> ((C*)(D*)&e)) error(25); //counter example + K k; + if(dynamic_cast<J*> ((B*)&k)) error(26); + KK kk; + if(dynamic_cast<J*> ((CC*)&kk)) error(27); +} + +int +main () +{ + test01(); + test02(); + test03(); + test04(); + return errors ? 1 : 0; +} |