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c++: new-expression is potentially constant in C++20

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... so adjust p_c_e accordingly.

gcc/cp/ChangeLog:

	* constexpr.cc (potential_constant_expression_1): Treat
	{,VEC_}NEW_EXPR and {,VEC_}DELETE_EXPRas potentially constant in C++20.
This commit is contained in:
Marek Polacek 2022-06-02 15:56:18 -04:00
parent 7b98910406
commit 2423f65484
1 changed files with 10 additions and 2 deletions
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12
gcc/cp/constexpr.cc
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@ -9039,12 +9039,20 @@ potential_constant_expression_1 (tree t, bool want_rval, bool strict, bool now,
"before C++17");
return false;
case DYNAMIC_CAST_EXPR:
case PSEUDO_DTOR_EXPR:
case NEW_EXPR:
case VEC_NEW_EXPR:
case DELETE_EXPR:
case VEC_DELETE_EXPR:
if (cxx_dialect >= cxx20)
/* In C++20, new-expressions are potentially constant. */
return true;
else if (flags & tf_error)
error_at (loc, "new-expression is not a constant expression "
"before C++20");
return false;
case DYNAMIC_CAST_EXPR:
case PSEUDO_DTOR_EXPR:
case THROW_EXPR:
case OMP_PARALLEL:
case OMP_TASK: