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* [Bug c++/15541] New: No warning if static checking can tell that a dynamic_cast will fail
@ 2004-05-20 9:02 bangerth at dealii dot org
2004-05-20 11:36 ` [Bug c++/15541] " pinskia at gcc dot gnu dot org
0 siblings, 1 reply; 2+ messages in thread
From: bangerth at dealii dot org @ 2004-05-20 9:02 UTC (permalink / raw)
To: gcc-bugs
Per conclusion from PR 15531:
In this code, the dynamic_cast will always fail:
-------------------------
struct Base
{
virtual ~Base () {}
};
class Derived : Base
{
friend int main ();
};
#include <cassert>
int main ()
{
Base * p = new Derived;
assert(dynamic_cast<Derived *>(p)); // fails
}
------------
We should issue a warning about this, but don't.
W.
--
Summary: No warning if static checking can tell that a
dynamic_cast will fail
Product: gcc
Version: 3.4.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: enhancement
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bangerth at dealii dot org
CC: gcc-bugs at gcc dot gnu dot org,gccbugs at contacts dot
eelis dot net,gdr at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15541
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/15541] No warning if static checking can tell that a dynamic_cast will fail
2004-05-20 9:02 [Bug c++/15541] New: No warning if static checking can tell that a dynamic_cast will fail bangerth at dealii dot org
@ 2004-05-20 11:36 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-20 11:36 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-19 13:30 -------
This is a dup of bug 12277.
*** This bug has been marked as a duplicate of 12277 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15541
^ permalink raw reply [flat|nested] 2+ messages in thread
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2004-05-20 9:02 [Bug c++/15541] New: No warning if static checking can tell that a dynamic_cast will fail bangerth at dealii dot org
2004-05-20 11:36 ` [Bug c++/15541] " pinskia at gcc dot gnu dot org
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