Using Vectors. MinGW warning

I use Code::Blocks 8.2, MinGW(gcc-g++-3.4.5-20060117-1-vista).

Code:

---

#include <vector>
#include <string>

using namespace std;

vector<vector<string> > Foo()
{
    vector<vector<string> > vs(15, vector<string>(15, "test"));
    return vs;
}

int main()
{

    vector<vector<string> > vvs = Foo();
    return 0;
}

---

MinGW warning:

C:\Program Files\CodeBlocks\MINGW\bin\..\lib\gcc\mingw32\3.4. 5\..\..\..\..\include\c++\3.4.5\bits\stl_uninitial ized.h|82|warning: '__cur' might be used uninitialized in this function|

if I use another code

Code:

---

void Foo(vector<vector<string> > &vvs)
{
    vvs.resize(15, vector<string>(15, "test"));
}

int main()
{
    vector<vector<string> > vvs;
    Foo(vvs);
    return 0;
}

---

then I get 12 warnings.

What is wrong with this code?

Nothing is wrong with your code. The compiler warning applies to the standard library implementation, and it is probably benign. I am using the MinGW port of g++ 3.4.5 and do not get such a warning, so it could be due to a particular version of the standard library implementation.

Quote:

---

Originally Posted by laserlight

I am using the MinGW port of g++ 3.4.5 and do not get such a warning

---

I use -W and -Wall compiler flags. If I switch off it then I do not get such a warning too.

Quote:

---

Originally Posted by Viewer

I use -W and -Wall compiler flags. If I switch off it then I do not get such a warning too.

---

Ah, but compiler warnings can detect genuine problems with your code. It is just that in this case they are benign, possibly due to an oversight in the standard library implementation.

BTW, GCC 4.3 is available on the MinGW download page.

*off topic* I'm getting really impatient waiting for GCC 4.4... it has been frozen for quite a few months already. */off topic*

Quote:

---

Originally Posted by laserlight

Ah, but compiler warnings can detect genuine problems with your code.

---

Yes. If a get 100 false warnings then I can't see genuine problems. Can I hide this specific code for compiler warnings? May be some #pragma will help me?

Quote:

---

Originally Posted by cyberfish

BTW, GCC 4.3 is available on the MinGW download page.

---

Only alpha available. I tested this unofficial replacements

TDM's GCC/mingw32 Builds

but it recommended for experimentation purposes only.

This is what I get when I try to compile your code -- oh wait, nevermind.

For some reason I thought that gcc and g++ were exchangeable or something. G++ works, GCC doesn't, the extreme errors that GCC spits out are hilarious

Code:

---

C:\Documents and Settings\Colin Diesh>gcc Test.cpp
Test.cpp:17:2: warning: no newline at end of file
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text+0x12): undefined r
eference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text+0x6d): undefined r
eference to `std::allocator<char>::allocator()'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text+0x91): undefined r
eference to `std::basic_string<char, std::char_traits<char>, std::allocator<char
> >::basic_string(char const*, std::allocator<char> const&)'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text+0x187): undefined
reference to `std::basic_string<char, std::char_traits<char>, std::allocator<cha
r> >::~basic_string()'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text+0x1aa): undefined
reference to `std::basic_string<char, std::char_traits<char>, std::allocator<cha
r> >::~basic_string()'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text+0x1c3): undefined
reference to `std::allocator<char>::~allocator()'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text+0x1dc): undefined
reference to `std::allocator<char>::~allocator()'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZNSt6vectorISsSaI
SsEEC1EjRKSsRKS0_[std::vector<std::basic_string<char, std::char_traits<char>, st
d::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<ch
ar>, std::allocator<char> > > >::vector(unsigned int, std::basic_string<char, st
d::char_traits<char>, std::allocator<char> > const&, std::allocator<std::basic_s
tring<char, std::char_traits<char>, std::allocator<char> > > const&)]+0xc): unde
fined reference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZNSt6vectorISsSaI
SsEED1Ev[std::vector<std::basic_string<char, std::char_traits<char>, std::alloca
tor<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std:
:allocator<char> > > >::~vector()]+0xc): undefined reference to `__gxx_personali
ty_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZNSt6vectorIS_ISs
SaISsEESaIS1_EEC1EjRKS1_RKS2_[std::vector<std::vector<std::basic_string<char, st
d::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<c
har, std::char_traits<char>, std::allocator<char> > > >, std::allocator<std::vec
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std:
:allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char>
> > > > >::vector(unsigned int, std::vector<std::basic_string<char, std::char_tr
aits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::
char_traits<char>, std::allocator<char> > > > const&, std::allocator<std::vector
<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::al
locator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
 > > const&)]+0xc): undefined reference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZNSt6vectorIS_ISs
SaISsEESaIS1_EED1Ev[std::vector<std::vector<std::basic_string<char, std::char_tr
aits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::
char_traits<char>, std::allocator<char> > > >, std::allocator<std::vector<std::b
asic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator
<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >:
:~vector()]+0xc): undefined reference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZNSt12_Vector_bas
eISsSaISsEEC2EjRKS0_[std::_Vector_base<std::basic_string<char, std::char_traits<
char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_
traits<char>, std::allocator<char> > > >::_Vector_base(unsigned int, std::alloca
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > con
st&)]+0xc): undefined reference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZNSt12_Vector_bas
eISsSaISsEED2Ev[std::_Vector_base<std::basic_string<char, std::char_traits<char>
, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_trait
s<char>, std::allocator<char> > > >::~_Vector_base()]+0xc): more undefined refer
ences to `__gxx_personality_sj0' follow
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt26__uninitiali
zed_fill_n_auxIPSsjSsET_S1_T0_RKT1_12__false_type[std::basic_string<char, std::c
har_traits<char>, std::allocator<char> >* std::__uninitialized_fill_n_aux<std::b
asic_string<char, std::char_traits<char>, std::allocator<char> >*, unsigned int,
 std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::b
asic_string<char, std::char_traits<char>, std::allocator<char> >*, unsigned int,
 std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&,
__false_type)]+0x76): undefined reference to `__cxa_begin_catch'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt26__uninitiali
zed_fill_n_auxIPSsjSsET_S1_T0_RKT1_12__false_type[std::basic_string<char, std::c
har_traits<char>, std::allocator<char> >* std::__uninitialized_fill_n_aux<std::b
asic_string<char, std::char_traits<char>, std::allocator<char> >*, unsigned int,
 std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::b
asic_string<char, std::char_traits<char>, std::allocator<char> >*, unsigned int,
 std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&,
__false_type)]+0x94): undefined reference to `__cxa_rethrow'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt26__uninitiali
zed_fill_n_auxIPSsjSsET_S1_T0_RKT1_12__false_type[std::basic_string<char, std::c
har_traits<char>, std::allocator<char> >* std::__uninitialized_fill_n_aux<std::b
asic_string<char, std::char_traits<char>, std::allocator<char> >*, unsigned int,
 std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::b
asic_string<char, std::char_traits<char>, std::allocator<char> >*, unsigned int,
 std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&,
__false_type)]+0xb7): undefined reference to `__cxa_end_catch'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt26__uninitiali
zed_fill_n_auxIPSt6vectorISsSaISsEEjS2_ET_S4_T0_RKT1_12__false_type[std::vector<
std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::all
ocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
>* std::__uninitialized_fill_n_aux<std::vector<std::basic_string<char, std::char
_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, st
d::char_traits<char>, std::allocator<char> > > >*, unsigned int, std::vector<std
::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::alloca
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >
(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char
> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocat
or<char> > > >*, unsigned int, std::vector<std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::c
har_traits<char>, std::allocator<char> > > > const&, __false_type)]+0xc): undefi
ned reference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt26__uninitiali
zed_fill_n_auxIPSt6vectorISsSaISsEEjS2_ET_S4_T0_RKT1_12__false_type[std::vector<
std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::all
ocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
>* std::__uninitialized_fill_n_aux<std::vector<std::basic_string<char, std::char
_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, st
d::char_traits<char>, std::allocator<char> > > >*, unsigned int, std::vector<std
::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::alloca
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >
(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char
> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocat
or<char> > > >*, unsigned int, std::vector<std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::c
har_traits<char>, std::allocator<char> > > > const&, __false_type)]+0x76): undef
ined reference to `__cxa_begin_catch'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt26__uninitiali
zed_fill_n_auxIPSt6vectorISsSaISsEEjS2_ET_S4_T0_RKT1_12__false_type[std::vector<
std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::all
ocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
>* std::__uninitialized_fill_n_aux<std::vector<std::basic_string<char, std::char
_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, st
d::char_traits<char>, std::allocator<char> > > >*, unsigned int, std::vector<std
::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::alloca
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >
(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char
> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocat
or<char> > > >*, unsigned int, std::vector<std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::c
har_traits<char>, std::allocator<char> > > > const&, __false_type)]+0x94): undef
ined reference to `__cxa_rethrow'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt26__uninitiali
zed_fill_n_auxIPSt6vectorISsSaISsEEjS2_ET_S4_T0_RKT1_12__false_type[std::vector<
std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::all
ocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
>* std::__uninitialized_fill_n_aux<std::vector<std::basic_string<char, std::char
_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, st
d::char_traits<char>, std::allocator<char> > > >*, unsigned int, std::vector<std
::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::alloca
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >
(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char
> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocat
or<char> > > >*, unsigned int, std::vector<std::basic_string<char, std::char_tra
its<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::c
har_traits<char>, std::allocator<char> > > > const&, __false_type)]+0xb7): undef
ined reference to `__cxa_end_catch'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZN9__gnu_cxx13new
_allocatorISsE8allocateEjPKv[__gnu_cxx::new_allocator<std::basic_string<char, st
d::char_traits<char>, std::allocator<char> > >::allocate(unsigned int, void cons
t*)]+0x10): undefined reference to `operator new(unsigned int)'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZN9__gnu_cxx13new
_allocatorISsE10deallocateEPSsj[__gnu_cxx::new_allocator<std::basic_string<char,
 std::char_traits<char>, std::allocator<char> > >::deallocate(std::basic_string<
char, std::char_traits<char>, std::allocator<char> >*, unsigned int)]+0xd): unde
fined reference to `operator delete(void*)'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt10_ConstructIS
sSsEvPT_RKT0_[void std::_Construct<std::basic_string<char, std::char_traits<char
>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::
allocator<char> > >(std::basic_string<char, std::char_traits<char>, std::allocat
or<char> >*, std::basic_string<char, std::char_traits<char>, std::allocator<char
> > const&)]+0xc): undefined reference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt10_ConstructIS
sSsEvPT_RKT0_[void std::_Construct<std::basic_string<char, std::char_traits<char
>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::
allocator<char> > >(std::basic_string<char, std::char_traits<char>, std::allocat
or<char> >*, std::basic_string<char, std::char_traits<char>, std::allocator<char
> > const&)]+0x66): undefined reference to `std::basic_string<char, std::char_tr
aits<char>, std::allocator<char> >::basic_string(std::string const&)'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt8_DestroyISsEv
PT_[void std::_Destroy<std::basic_string<char, std::char_traits<char>, std::allo
cator<char> > >(std::basic_string<char, std::char_traits<char>, std::allocator<c
har> >*)]+0xd): undefined reference to `std::basic_string<char, std::char_traits
<char>, std::allocator<char> >::~basic_string()'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZN9__gnu_cxx13new
_allocatorISt6vectorISsSaISsEEE8allocateEjPKv[__gnu_cxx::new_allocator<std::vect
or<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::
allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> >
 > > >::allocate(unsigned int, void const*)]+0x16): undefined reference to `oper
ator new(unsigned int)'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZN9__gnu_cxx13new
_allocatorISt6vectorISsSaISsEEE10deallocateEPS3_j[__gnu_cxx::new_allocator<std::
vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, s
td::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<cha
r> > > > >::deallocate(std::vector<std::basic_string<char, std::char_traits<char
>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_trai
ts<char>, std::allocator<char> > > >*, unsigned int)]+0xd): undefined reference
to `operator delete(void*)'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt10_ConstructIS
t6vectorISsSaISsEES2_EvPT_RKT0_[void std::_Construct<std::vector<std::basic_stri
ng<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::bas
ic_string<char, std::char_traits<char>, std::allocator<char> > > >, std::vector<
std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::all
ocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
> >(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<c
har> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allo
cator<char> > > >*, std::vector<std::basic_string<char, std::char_traits<char>,
std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<
char>, std::allocator<char> > > > const&)]+0xc): undefined reference to `__gxx_p
ersonality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZNSt6vectorISsSaI
SsEEC1ERKS1_[std::vector<std::basic_string<char, std::char_traits<char>, std::al
locator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>,
std::allocator<char> > > >::vector(std::vector<std::basic_string<char, std::char
_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, st
d::char_traits<char>, std::allocator<char> > > > const&)]+0xc): undefined refere
nce to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt24__uninitiali
zed_copy_auxIN9__gnu_cxx17__normal_iteratorIPKSsSt6vectorISsSaISsEEEEPSsET0_T_SA
_S9_12__false_type[std::basic_string<char, std::char_traits<char>, std::allocato
r<char> >* std::__uninitialized_copy_aux<__gnu_cxx::__normal_iterator<std::basic
_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vector
<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::al
locator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
 > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*>(_
_gnu_cxx::__normal_iterator<std::basic_string<char, std::char_traits<char>, std:
:allocator<char> > const*, std::vector<std::basic_string<char, std::char_traits<
char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_
traits<char>, std::allocator<char> > > > >, __gnu_cxx::__normal_iterator<std::ba
sic_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vec
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std:
:allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char>
> > > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*
, __false_type)]+0xc): undefined reference to `__gxx_personality_sj0'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt24__uninitiali
zed_copy_auxIN9__gnu_cxx17__normal_iteratorIPKSsSt6vectorISsSaISsEEEEPSsET0_T_SA
_S9_12__false_type[std::basic_string<char, std::char_traits<char>, std::allocato
r<char> >* std::__uninitialized_copy_aux<__gnu_cxx::__normal_iterator<std::basic
_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vector
<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::al
locator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
 > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*>(_
_gnu_cxx::__normal_iterator<std::basic_string<char, std::char_traits<char>, std:
:allocator<char> > const*, std::vector<std::basic_string<char, std::char_traits<
char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_
traits<char>, std::allocator<char> > > > >, __gnu_cxx::__normal_iterator<std::ba
sic_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vec
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std:
:allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char>
> > > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*
, __false_type)]+0x94): undefined reference to `__cxa_begin_catch'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt24__uninitiali
zed_copy_auxIN9__gnu_cxx17__normal_iteratorIPKSsSt6vectorISsSaISsEEEEPSsET0_T_SA
_S9_12__false_type[std::basic_string<char, std::char_traits<char>, std::allocato
r<char> >* std::__uninitialized_copy_aux<__gnu_cxx::__normal_iterator<std::basic
_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vector
<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::al
locator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
 > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*>(_
_gnu_cxx::__normal_iterator<std::basic_string<char, std::char_traits<char>, std:
:allocator<char> > const*, std::vector<std::basic_string<char, std::char_traits<
char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_
traits<char>, std::allocator<char> > > > >, __gnu_cxx::__normal_iterator<std::ba
sic_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vec
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std:
:allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char>
> > > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*
, __false_type)]+0xb2): undefined reference to `__cxa_rethrow'
C:\DOCUME~1\COLIND~1\LOCALS~1\Temp/ccAjO7DS.o:Test.cpp:(.text$_ZSt24__uninitiali
zed_copy_auxIN9__gnu_cxx17__normal_iteratorIPKSsSt6vectorISsSaISsEEEEPSsET0_T_SA
_S9_12__false_type[std::basic_string<char, std::char_traits<char>, std::allocato
r<char> >* std::__uninitialized_copy_aux<__gnu_cxx::__normal_iterator<std::basic
_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vector
<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::al
locator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >
 > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*>(_
_gnu_cxx::__normal_iterator<std::basic_string<char, std::char_traits<char>, std:
:allocator<char> > const*, std::vector<std::basic_string<char, std::char_traits<
char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_
traits<char>, std::allocator<char> > > > >, __gnu_cxx::__normal_iterator<std::ba
sic_string<char, std::char_traits<char>, std::allocator<char> > const*, std::vec
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std:
:allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char>
> > > >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*
, __false_type)]+0xd5): undefined reference to `__cxa_end_catch'
collect2: ld returned 1 exit status

---

Oh and I meant to mention that I do not get these warnings, and I just installed MinGW default settings, it gave me g++ 3.4.5

g++ (GCC) 3.4.5 (mingw-vista special r3)

I am on Windows XP

gcc is able to figure out if it's C or C++, but if you use gcc for the final step of producing the executable file, then you need to provide the C++ standard libraries yourself. If you use g++, it automatically drags in the C++ library as well as the standard C library. If you are going to use only one and not the other, I'd suggest that using g++ is a better option - it still compiles C code as well as C++ code.

--
Mats

I have been using this distribution here
MinGW Distro - nuwen.net
for quite a while now, and I haven't seen anything wrong with it.

Comes with GCC 4.3 and a number of common libraries.