[Bug c++/44277] [C++0x] Add warning to facilitate nullptr conversion.

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44277

--- Comment #6 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2011-11-01 23:28:23 UTC ---
Author: paolo
Date: Tue Nov  1 23:28:19 2011
New Revision: 180750

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180750
Log:
/cp
2011-11-01  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/44277
    * cvt.c (cp_convert_to_pointer): Warn for zero as null pointer
    constant.
    * typeck.c (cp_truthvalue_conversion): Handle pointers and member
    function pointers under c_inhibit_evaluation_warnings; use
    nullptr_node for data member pointers.
    (cp_build_binary_op): Tweak, just forward to cp_convert op1,
    either a nullptr_node or an integer_zero_node.
    (build_ptrmemfunc): Use nullptr_node.
    * init.c (build_zero_init_1): Likewise.

/c-family
2011-11-01  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/44277
    * c.opt: Add Wzero-as-null-pointer-constant.

/gcc
2011-11-01  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/44277
    * doc/invoke.texi: Document -Wzero-as-null-pointer-constant.

/testsuite
2011-11-01  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/44277
    * g++.dg/warn/Wzero-as-null-pointer-constant-1.C: New.
    * g++.dg/cpp0x/Wzero-as-null-pointer-constant-1.C: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/Wzero-as-null-pointer-constant-1.C
    trunk/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-1.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c.opt
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cvt.c
    trunk/gcc/cp/init.c
    trunk/gcc/cp/typeck.c
    trunk/gcc/doc/invoke.texi
    trunk/gcc/testsuite/ChangeLog