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| author | Jason Merrill <jason@redhat.com> | 2011-08-28 11:38:29 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2011-08-28 11:38:29 -0400 |
| commit | e90abaa0a28ccc5581f5b7c7abc789c8fb84764c (patch) | |
| tree | 66c53e1699feba9e99d474d7b0964f8cd338cec1 /gcc/cp/call.c | |
| parent | 2aef967bc8e30972f0ddf792e6045d716078b55a (diff) | |
| download | gcc-e90abaa0a28ccc5581f5b7c7abc789c8fb84764c.zip gcc-e90abaa0a28ccc5581f5b7c7abc789c8fb84764c.tar.gz gcc-e90abaa0a28ccc5581f5b7c7abc789c8fb84764c.tar.bz2 | |
Core DR 342 PR c++/48582
Core DR 342
PR c++/48582
* pt.c (check_valid_ptrmem_cst_expr): A null member pointer value
is valid in C++11.
(convert_nontype_argument): Likewise. Implicitly convert nullptr
and do constant folding.
* mangle.c (write_template_arg_literal): Mangle null member
pointer values as 0.
* call.c (null_member_pointer_value_p): New.
* cp-tree.h: Declare it.
From-SVN: r178144
Diffstat (limited to 'gcc/cp/call.c')
| -rw-r--r-- | gcc/cp/call.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/cp/call.c b/gcc/cp/call.c index dc35824..8421260 100644 --- a/gcc/cp/call.c +++ b/gcc/cp/call.c @@ -553,6 +553,23 @@ null_ptr_cst_p (tree t) return false; } +/* Returns true iff T is a null member pointer value (4.11). */ + +bool +null_member_pointer_value_p (tree t) +{ + tree type = TREE_TYPE (t); + if (!type) + return false; + else if (TYPE_PTRMEMFUNC_P (type)) + return (TREE_CODE (t) == CONSTRUCTOR + && integer_zerop (CONSTRUCTOR_ELT (t, 0)->value)); + else if (TYPE_PTRMEM_P (type)) + return integer_all_onesp (t); + else + return false; +} + /* Returns nonzero if PARMLIST consists of only default parms, ellipsis, and/or undeduced parameter packs. */ |