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From "Martin Sebor (JIRA)" <j...@apache.org>
Subject [jira] Created: (STDCXX-512) std::valarray computed assignment operators don't compile with a user-defined class
Date Wed, 08 Aug 2007 21:18:59 GMT
std::valarray computed assignment operators don't compile with a user-defined class
-----------------------------------------------------------------------------------

                 Key: STDCXX-512
                 URL: https://issues.apache.org/jira/browse/STDCXX-512
             Project: C++ Standard Library
          Issue Type: Bug
          Components: 26. Numerics
    Affects Versions: 4.1.3
            Reporter: Martin Sebor


The program below fails to compile because the valarray computed assignment operators make
use of operator@ (T, T) instead of the corresponding computed assignment operators defined
by T (i.e., T::operator@(T)).

$ cat u.cpp && make u
#include <valarray>

struct Value {
    Value& operator*= (const Value&) { return *this; }
    Value& operator/= (const Value&) { return *this; }
    Value& operator+= (const Value&) { return *this; }
    Value& operator-= (const Value&) { return *this; }
    Value& operator%= (const Value&) { return *this; }
    Value& operator^= (const Value&) { return *this; }
    Value& operator&= (const Value&) { return *this; }
    Value& operator|= (const Value&) { return *this; }
    Value& operator<<= (const Value&) { return *this; }
    Value& operator>>= (const Value&) { return *this; }
};

int main ()
{
    std::valarray<Value> val;

    val *= val;
    val /= val;
    val += val;
    val -= val;
    val %= val;
    val ^= val;
    val &= val;
    val |= val;
    val <<= val;
    val >>= val;
}
gcc -c -I/amd/devco/sebor/stdcxx-4.1.3/include/ansi -D_RWSTDDEBUG   -pthread -D_RWSTD_USE_CONFIG
-I/build/sebor/stdcxx-4.1.3-gcc-3.4.3_6-15D/include -I/amd/devco/sebor/stdcxx-4.1.3/include
-I/amd/devco/sebor/stdcxx-4.1.3/examples/include  -pedantic -nostdinc++ -g  -m64 -Wall -W
-Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long -Wcast-align  u.cpp
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type std::multiplies<_TypeT>::operator()(const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::first_argument_type&, const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::second_argument_type&) const [with _TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = std::multiplies<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:363:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator*=(const std::valarray<_TypeT>&) [with _TypeT
= Value]'
u.cpp:20:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:83: error: no match for 'operator*' in '__x
* __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type std::divides<_TypeT>::operator()(const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::first_argument_type&, const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::second_argument_type&) const [with _TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = std::divides<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:376:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator/=(const std::valarray<_TypeT>&) [with _TypeT
= Value]'
u.cpp:21:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:96: error: no match for 'operator/' in '__x
/ __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type std::plus<_TypeT>::operator()(const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::first_argument_type&, const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::second_argument_type&) const [with _TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = std::plus<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:389:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator+=(const std::valarray<_TypeT>&) [with _TypeT
= Value]'
u.cpp:22:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:57: error: no match for 'operator+' in '__x
+ __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type std::minus<_TypeT>::operator()(const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::first_argument_type&, const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::second_argument_type&) const [with _TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = std::minus<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:402:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator-=(const std::valarray<_TypeT>&) [with _TypeT
= Value]'
u.cpp:23:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:70: error: no match for 'operator-' in '__x
- __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type std::modulus<_TypeT>::operator()(const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::first_argument_type&, const typename std::binary_function<_TypeT,
_TypeT, _TypeT>::second_argument_type&) const [with _TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = std::modulus<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:415:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator%=(const std::valarray<_TypeT>&) [with _TypeT
= Value]'
u.cpp:24:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:109: error: no match for 'operator%' in '__x
% __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type __rw::exclusive_or<_TypeT>::operator()(const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::first_argument_type&, const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::second_argument_type&) const [with
_TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = __rw::exclusive_or<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:428:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator^=(const std::valarray<_TypeT>&) [with _TypeT
= Value]'
u.cpp:25:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:732: error: no match for 'operator^' in '__x
^ __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type __rw::bitwise_and<_TypeT>::operator()(const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::first_argument_type&, const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::second_argument_type&) const [with
_TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = __rw::bitwise_and<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:441:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator&=(const std::valarray<_TypeT>&) [with
_TypeT = Value]'
u.cpp:26:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:719: error: no match for 'operator&'
in '__x & __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type __rw::bitwise_or<_TypeT>::operator()(const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::first_argument_type&, const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::second_argument_type&) const [with
_TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = __rw::bitwise_or<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:454:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator|=(const std::valarray<_TypeT>&) [with _TypeT
= Value]'
u.cpp:27:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:706: error: no match for 'operator|' in '__x
| __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type __rw::shift_left<_TypeT>::operator()(const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::first_argument_type&, const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::second_argument_type&) const [with
_TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = __rw::shift_left<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:467:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator<<=(const std::valarray<_TypeT>&) [with
_TypeT = Value]'
u.cpp:28:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:745: error: no match for 'operator<<'
in '__x << __y'
/amd/devco/sebor/stdcxx-4.1.3/include/functional: In member function `typename std::binary_function<_TypeT,
_TypeT, _TypeT>::result_type __rw::shift_right<_TypeT>::operator()(const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::first_argument_type&, const typename
std::binary_function<_TypeT, _TypeT, _TypeT>::second_argument_type&) const [with
_TypeT = Value]':
/amd/devco/sebor/stdcxx-4.1.3/include/algorithm:353:   instantiated from `_OutputIter std::transform(_InputIter1,
_InputIter1, _InputIter2, _OutputIter, _BinaryOperation) [with _InputIter1 = Value*, _InputIter2
= const Value*, _OutputIter = Value*, _BinaryOperation = __rw::shift_right<Value>]'
/amd/devco/sebor/stdcxx-4.1.3/include/valarray:480:   instantiated from `std::valarray<_TypeT>&
std::valarray<_TypeT>::operator>>=(const std::valarray<_TypeT>&) [with
_TypeT = Value]'
u.cpp:29:   instantiated from here
/amd/devco/sebor/stdcxx-4.1.3/include/functional:758: error: no match for 'operator>>'
in '__x >> __y'
make: *** [u.o] Error 1


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