Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/ipa/pr89693.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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// Copyright (C) 2005 Free Software Foundation, Inc. // Contributed by Nathan Sidwell 4 Apr 2005 <nathan@codesourcery.com> // Re-purposed to check for re-rurgesnce of PR 89693 in 2019. // { dg-do compile } // { dg-options "-O3 -fno-ipa-icf-functions" } // Origin: yanliu@ca.ibm.com // nathan@codesourcery.com struct A { virtual void One (); }; struct B { virtual B *Two (); virtual B &Three (); }; struct C : A, B { virtual C *Two (); virtual C &Three (); }; void A::One () {} B *B::Two() {return this;} B &B::Three() {return *this;} C *C::Two () {return 0;} C &C::Three () {return *(C *)0;} B *Foo (B *b) { return b->Two (); } B &Bar (B *b) { return b->Three (); } int main () { C c; /* We should not adjust a null pointer. */ if (Foo (&c)) return 1; /* But we should adjust a (bogus) null reference. */ if (!&Bar (&c)) return 2; return 0; }