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Re: c++/10033: [3.2 regression] optimization breaks polymorphic references w/ 'typeid' operator
- From: bangerth at dealii dot org
- To: gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, jfischer_5809 at yahoo dot com, nobody at gcc dot gnu dot org
- Date: 12 Mar 2003 14:24:17 -0000
- Subject: Re: c++/10033: [3.2 regression] optimization breaks polymorphic references w/ 'typeid' operator
- Reply-to: bangerth at dealii dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, jfischer_5809 at yahoo dot com, nobody at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Old Synopsis: optimization breaks polymorphic references w/ 'typeid' operator
New Synopsis: [3.2 regression] optimization breaks polymorphic references w/ 'typeid' operator
State-Changed-From-To: open->analyzed
State-Changed-By: bangerth
State-Changed-When: Wed Mar 12 14:24:17 2003
State-Changed-Why:
Confirmed. Here's a smaller testcase:
---------------------
#include <cstdlib>
#include <typeinfo>
struct A {
virtual ~A() { }
};
struct B : public A { };
int main()
{
B bobj;
A& aref = bobj;
if (typeid(aref) != typeid(B))
abort();
return 0;
}
--------------------------------
It executes just fine with 3.0, 3.3 and 3.4, but
aborts with 3.2 when given -O2. So it's a regression
of 3.2 only.
W.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10033