[Bug c++/67216] New: false is still a null pointer constant

[Bug c++/67216] New: false is still a null pointer constant

[potswa at mac dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67216

            Bug ID: 67216
           Summary: false is still a null pointer constant
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: potswa at mac dot com
  Target Milestone: ---

false should not convert to pointer types since C++11. This program is ill
formed in C++03 and well formed in C++11.

struct s {
    s( long ) {}
};

struct t {
    t( void * ) {}
}

void foo(s) {}
void foo(t) {}

int main() {
    foo(false);
}

[Bug c++/67216] false is still a null pointer constant

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67216

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |accepts-invalid
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-08-14
     Ever confirmed|0                           |1

[Bug c++/67216] false is still a null pointer constant

[pravasimeet999 at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67216

Pravasi Meet <pravasimeet999 at yahoo dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pravasimeet999 at yahoo dot com

--- Comment #1 from Pravasi Meet <pravasimeet999 at yahoo dot com> ---
This bug came into observation by the question that was asked on StackOverflow
user Pravasi Meet. See this
http://stackoverflow.com/questions/32009694/why-implicit-conversion-of-bool-to-string-isnt-an-error/32009989?noredirect=1#comment51927225_32009989
link.

[Bug c++/67216] false is still a null pointer constant

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67216

--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Mon Aug 17 21:40:07 2015
New Revision: 226956

URL: https://gcc.gnu.org/viewcvs?rev=226956&root=gcc&view=rev
Log:
/cp
2015-08-17  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/67216
        * call.c (null_ptr_cst_p): In C++11 return 'false' for 'false'.

/testsuite
2015-08-17  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/67216
        * g++.dg/cpp0x/nullptr34.C: New.
        * g++.dg/warn/Wconversion2.C: Adjust.
        * g++.dg/warn/Wnull-conversion-1.C: Likewise.
        * g++.old-deja/g++.other/null3.C: Likewise.

        * g++.dg/cpp0x/pr51313.C: Adjust.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/nullptr34.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/pr51313.C
    trunk/gcc/testsuite/g++.dg/warn/Wconversion2.C
    trunk/gcc/testsuite/g++.dg/warn/Wnull-conversion-1.C
    trunk/gcc/testsuite/g++.old-deja/g++.other/null3.C

[Bug c++/67216] false is still a null pointer constant

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67216

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
           Assignee|paolo.carlini at oracle dot com    |unassigned at gcc dot gnu.org
   Target Milestone|---                         |6.0

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.

[Bug c++/67216] false is still a null pointer constant

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67216

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Aug 18 18:04:48 2015
New Revision: 226986

URL: https://gcc.gnu.org/viewcvs?rev=226986&root=gcc&view=rev
Log:
        PR c++/67216
        * testsuite/tr1/2_general_utilities/shared_ptr/observers/bool_conv.cc:
        Fix use of safe-bool idiom that isn't valid in C++11.

Modified:
    trunk/libstdc++-v3/ChangeLog
   
trunk/libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/observers/bool_conv.cc