Ice for C++ from ZeroC (http://www.zeroc.com, source code available) doesn't
compile anymore with
GCC 4.0.0 (I also tried with GCC from CVS and the result is the same). It
compiled fine with GCC 3.4.2.
I'm getting an error which looks like the following with 4.0.0:
Main.cpp: In constructor 'IteratorI::IteratorI()':
Main.cpp:31: error: no matching function for call to 'Iterator::Iterator(const
void**)'
Main.cpp:6: note: candidates are: Iterator::Iterator()
Main.cpp:6: note: Iterator::Iterator(const Iterator&)
I don't understand why it's looking up this constructor, the code doesn't
contain any reference to it. I'm
also getting a segmentation fault of the compiler with similar code (see the
code sample below). Here's
a small test case demonstrating the problem(s):
-----
class Base
{
};
class Iterator : virtual public Base
{
};
bool operator==(const Iterator&, const Iterator&);
class IteratorI : public Iterator
{
};
class Obj
{
bool operator==(const Obj&) const { return true; }
};
template <typename T>
bool dummy(const Obj& lhs, const Obj& rhs)
{
const Obj* lhsKey = &lhs;
const Obj* rhsKey = &rhs;
return *lhsKey == *rhsKey;
}
int
main(int argc, char** argv)
{
// G++ segfault with the following line uncommented
//Iterator* it1 = new Iterator();
// error: no matching function for call to 'Iterator::Iterator(const
void**)'
IteratorI* it2 = new IteratorI();
}
-----
The output of 'g++ -v -save-temps Main.cpp':
-----
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure --enable-threads --prefix=/opt/gcc-4.0.0
Thread model: posix
gcc version 4.0.0
/opt/gcc-4.0.0/libexec/gcc/i686-pc-linux-gnu/4.0.0/cc1plus -E -quiet -v
-D_GNU_SOURCE
Main.cpp -mtune=pentiumpro -fpch-preprocess -o Main.ii
ignoring nonexistent directory
"/opt/gcc-4.0.0/lib/gcc/i686-pc-linux-gnu/4.0.0/../../../../i686-pc-
linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/gcc-4.0.0/lib/gcc/i686-pc-linux-gnu/4.0.0/../../../../include/c++/4.0.0
/opt/gcc-4.0.0/lib/gcc/i686-pc-linux-gnu/4.0.0/../../../../include/c++/4.0.0/i686-pc-linux-gnu
/opt/gcc-4.0.0/lib/gcc/i686-pc-linux-gnu/4.0.0/../../../../include/c++/4.0.0/backward
/usr/local/include
/opt/gcc-4.0.0/include
/opt/gcc-4.0.0/lib/gcc/i686-pc-linux-gnu/4.0.0/include
/usr/include
End of search list.
/opt/gcc-4.0.0/libexec/gcc/i686-pc-linux-gnu/4.0.0/cc1plus -fpreprocessed
Main.ii -quiet
-dumpbase Main.cpp -mtune=pentiumpro -auxbase Main -version -o Main.s
GNU C++ version 4.0.0 (i686-pc-linux-gnu)
compiled by GNU C version 4.0.0.
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64389
Main.cpp: In constructor 'IteratorI::IteratorI()':
Main.cpp:31: error: no matching function for call to 'Iterator::Iterator(const
void**)'
-----
--
Summary: error in constructor lookup (can't find constructor with
"const void**" argument)
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: benoit at zeroc dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21340
