Under MinGW with gcc 3.4.2 I'm having reverse_iterator problems with std::list.
My first example below fails to compile, and my second example compiles but
runs incorrectly. I was going to attach the .ii files but bugzilla doesn't
seem to allow attachments and the .ii files are rather large.
So here as text are the very short .cpp files which include only standard
headers.
$ type g++
g++ is hashed (/mingw/bin/g++)
$ g++ -v
Reading specs from c:/devel/mingw/bin/../lib/gcc/mingw32/3.4.2/specs
Configured with: ../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as
--host=mingw32 --target=mingw32 --prefix=/mingw --enable-threads --disable-nls
--enable-languages=c,c++,f77,ada,objc,java --disable-win32-registry
--disable-shared --enable-sjlj-exceptions --enable-libgcj --disable-java-awt
--without-x --enable-java-gc=boehm --disable-libgcj-debug --enable-interpreter
--enable-hash-synchronization --enable-libstdcxx-debug
Thread model: win32
gcc version 3.4.2 (mingw-special)
$ g++ -save-temps testrit1.cpp -otestrit1
testrit1.cpp: In function `int main(int, char**)':
testrit1.cpp:39: error: no match for 'operator!=' in 'creverse !=
std::list<_Tp, _Alloc>::rend() [with _Tp = int, _Alloc =
std::allocator]()'
$ g++ -save-temps testrit2.cpp -otestrit2
$ testrit2
7
8
IMPOSSIBLE
testrit1.cpp
#include
#include
using namespace std;
int
main( int argc, char *argv[] )
{
list mylist;
mylist.push_back(1);
mylist.push_back(2);
mylist.push_back(3);
mylist.push_back(4);
list::iterator forward;
list::reverse_iterator reverse;
list::const_iterator cforward;
list::const_reverse_iterator creverse;
// forward
for( forward = mylist.begin(); forward != mylist.end(); ++forward )
cout << *forward << endl;
cout << endl;
// reverse
for( reverse = mylist.rbegin(); reverse != mylist.rend(); ++reverse )
cout << *reverse << endl;
cout << endl;
// cforward
for( cforward = mylist.begin(); cforward != mylist.end(); ++cforward )
cout << *cforward << endl;
cout << endl;
// creverse
for( creverse = mylist.rbegin(); creverse != mylist.rend(); ++creverse )
cout << *creverse << endl;
cout << endl;
return 0;
}
testrit2.cpp
#include
#include
using namespace std;
int
main( int argc, char *argv[] )
{
list mylist;
mylist.push_back(1);
mylist.push_back(2);
mylist.push_back(3);
mylist.push_back(4);
mylist.push_back(5);
mylist.push_back(6);
mylist.push_back(7);
mylist.push_back(8);
mylist.push_back(9);
list::iterator forward;
list::reverse_iterator reverse;
reverse = mylist.rbegin();
++reverse;
++reverse;
cout << *reverse << endl;
forward = reverse.base();
cout << *forward << endl;
if( *forward != *reverse ) cout << "IMPOSSIBLE" << std::endl;
return 0;
}
--
Summary: reverse_iterator problems with g++ 3.4.2
Product: gcc
Version: 3.4.2
Status: UNCONFIRMED
Severity: major
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: shawn dot yarbrough at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24274
