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[Bug libstdc++/19480] New: set::iterator is const
- From: "malessa at de dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Jan 2005 12:00:09 -0000
- Subject: [Bug libstdc++/19480] New: set::iterator is const
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
The following piece of code gives me this compiler error:
itertest.C: In function `int main(int, char**)':
itertest.C:35: passing `const Foo' as `this' argument of `void
Foo::setValue(unsigned int)' discards qualifiers
itertest.C:36: passing `const Foo' as `this' argument of `unsigned int
Foo::getValue()' discards qualifiers
Here is the code:
-----------------------------------------
#include <stdlib.h>
#include <iostream>
#include <set>
using namespace std;
class Foo
{
public:
Foo():mValue(0xFF) { }
unsigned getValue() { return mValue; }
void setValue(unsigned inValue) { mValue = inValue; }
private:
unsigned mValue;
};
int main(int argc, char **argv)
{
set<Foo> fooSet;
set<Foo>::iterator fooSetIter;
fooSetIter = fooSet.begin();
//This causes compile error with gcc:
fooSetIter->setValue(99);
cout << fooSetIter->getValue() << endl;
}
-----------------------------------------
I think this error comes up because set::iterator is defined as follows in
stl_set.h:
typedef typename _Rep_type::const_iterator iterator;
typedef typename _Rep_type::const_iterator const_iterator;
So both iterator and const_iterator are defined as const_iterator !
Additional info:
bash-2.05b$ gcc -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --
infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-
checking --host=i386-redhat-linux --with-system-zlib --enable-__cxa_atexit
Thread model: posix
gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
--
Summary: set::iterator is const
Product: gcc
Version: 3.2
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: libstdc++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: malessa at de dot ibm dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19480