[Bug c++/51927] [C++0x] Cannot access non-static members in initializer

[gccearlyadop...@trash-mail.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51927

--- Comment #1 from gccearlyadop...@trash-mail.com 2012-05-30 07:48:35 UTC ---
This Bug still exists in the latest GCC 4.7 release.

[Bug c++/51927] [C++0x] Cannot access non-static members in initializer

[gccearlyadop...@trash-mail.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51927

--- Comment #3 from gccearlyadop...@trash-mail.com 2012-05-30 12:34:12 UTC ---
My local GCC says "4.7.0_3". :)

[Bug c++/51818] New: [C++0x] Name mangling error using lambda expressions in GCC47

[gccearlyadop...@trash-mail.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51818

 Bug #: 51818
   Summary: [C++0x] Name mangling error using lambda expressions
in GCC47
Classification: Unclassified
   Product: gcc
   Version: unknown
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: gccearlyadop...@trash-mail.com


The following program fails to compile:

#include 
#include 
using std::cout;
using std::endl;

typedef std::function void_fun;

struct foo 
{
void_fun bar = [=]() {
cout << "foo::bar" << endl;
};  
void_fun baz = [=]() {
cout << "foo::baz" << endl;
};  
};

int main()
{
foo f;
f.bar();
f.baz();
}


GCC 47 says: ... FATAL:Symbol
__ZSt4moveIRNUlvE_EEONSt16remove_referenceIT_E4typeEOS3_ already defined


Furthermore, it's not possible to call bar() from baz:

minimal_mangling_example.cpp: In lambda function:
minimal_mangling_example.cpp:12:5: error: invalid use of non-static data member
'foo::bar'
minimal_mangling_example.cpp:15:9: error: from this location

Unless the this pointer is passed and used explicitly:

void_fun baz = [this]() {
this->baz();
}; 


That's wrong, too. The standard says in 5.1.2.7 ... "transforming id-
expressions referring to non-static class members into class member access
expressions using (*this) ...". Thus, baz should be able to call bar without
using this:


void_fun baz = [=]() {
bar();
}; 



Best regards.

[Bug c++/51927] New: [C++0x] Cannot access non-static members in initializer

[gccearlyadop...@trash-mail.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51927

 Bug #: 51927
   Summary: [C++0x] Cannot access non-static members in
initializer
Classification: Unclassified
   Product: gcc
   Version: 4.7.0
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: gccearlyadop...@trash-mail.com


GCC47 doesn't allow to access non-static members in non-static member
initialization. The following program fails to compile with the error "invalid
use of non-static data member 'testee::l1'".

#include 
#include 
using std::cout;
using std::endl;

struct testee
{
std::function l1 = []()
{   
cout << "world" << endl;
};  
std::function l2 = [=]()
{   
cout << "hello " << endl;
l1();
};  
};

int main()
{
testee t;
t.l2();
}

Taking the address of l1 in the lambda expression used to initialize l2 is also
refused by GCC.