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| author | Marek Polacek <polacek@redhat.com> | 2019-08-13 15:05:48 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2019-08-13 15:05:48 +0000 |
| commit | cb0a83f3437be73075fba17db68abbf240d17a36 (patch) | |
| tree | 0697b0b4e87b5dc7ddb5c05fad90bdad5eaeccad /gcc/cp/decl.c | |
| parent | 82614ffbfdb57dcc490a752f0d398bbe2a774864 (diff) | |
| download | gcc-cb0a83f3437be73075fba17db68abbf240d17a36.zip gcc-cb0a83f3437be73075fba17db68abbf240d17a36.tar.gz gcc-cb0a83f3437be73075fba17db68abbf240d17a36.tar.bz2 | |
PR c++/90473 - wrong code with nullptr in default argument.
* call.c (null_ptr_cst_p): Update quote from the standard.
* decl.c (check_default_argument): Don't return nullptr when the arg
has side-effects.
* g++.dg/cpp0x/nullptr42.C: New test.
From-SVN: r274382
Diffstat (limited to 'gcc/cp/decl.c')
| -rw-r--r-- | gcc/cp/decl.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index b8806e4..d91f251 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -13177,7 +13177,9 @@ check_default_argument (tree decl, tree arg, tsubst_flags_t complain) /* Avoid redundant -Wzero-as-null-pointer-constant warnings at the call sites. */ if (TYPE_PTR_OR_PTRMEM_P (decl_type) - && null_ptr_cst_p (arg)) + && null_ptr_cst_p (arg) + /* Don't lose side-effects as in PR90473. */ + && !TREE_SIDE_EFFECTS (arg)) return nullptr_node; /* [dcl.fct.default] |