The following const-incorrect program compiles without error on gcc 4.1.0, and
4.3.0 20070323:
class Foo {};
class Bar : public Foo {};
static const Foo *foo = 0;
static Bar *bar = static_cast<const Bar*>(foo); // Error, casts away const
void func(const Foo *foo) {
Bar *bar = static_cast<const Bar*>(foo); // Error, casts away const
}
gcc 2.95.3, 3.4.5, and 4.0.2 report errors on the commented lines above, so it
looks like a compiler regression in 4.1.0.
I looked hard through existing PRs, and couldn't find this reported elsewhere
(the closest is PR 20475, but it's concerned with 3.4.4 and the const-ness, or
otherwise, of string literals, so not the same). I'd be a little surprised if
I'm the first to see it, but it's possible...
--
Summary: static_cast can remove const-ness
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: simon_baldwin at yahoo dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31449
