The attached testcase compiles and runs correctly with gcc 3.3.4, but gives the
following compilation errors with gcc 3.4.4:
hashtest.cxx: In function `int main()':
hashtest.cxx:11: error: cannot convert `int*' to `std::pair<const int, int>*' in
initialization
hashtest.cxx:12: error: no matching function for call to
`std::allocator<int>::construct(std::pair<const int, int>*&, std::pair<const
int, int>&)'
/usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ext/new_allocator.h:96:
note: candidates are: void __gnu_cxx::new_allocator<_Tp>::construct(_Tp*, const
_Tp&) [with _Tp = int]
hashtest.cxx:17: error: no matching function for call to
`std::allocator<int>::destroy(std::pair<const int, int>*&)'
/usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ext/new_allocator.h:99:
note: candidates are: void __gnu_cxx::new_allocator<_Tp>::destroy(_Tp*) [with
_Tp = int]
hashtest.cxx:18: error: no matching function for call to
`std::allocator<int>::deallocate(std::pair<const int, int>*&, int)'
/usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ext/new_allocator.h:86:
note: candidates are: void __gnu_cxx::new_allocator<_Tp>::deallocate(_Tp*,
size_t) [with _Tp = int]
The reason for the errors are wrong default allocators in ext/hash_map. A patch
that fixes the problem is attached.
--
Summary: Wrong default allocator in ext/hash_map
Product: gcc
Version: 3.4.4
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libstdc++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mattias dot ellert at tsl dot uu dot se
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23528
