r267030 - in /trunk/gcc: cp/ChangeLog cp/conste...

[mpolacek@gcc.gnu.org]

Author: mpolacek
Date: Tue Dec 11 18:53:03 2018
New Revision: 267030

URL: https://gcc.gnu.org/viewcvs?rev=267030&root=gcc&view=rev
Log:
	PR c++/86608 - reading constexpr volatile variable.
	* constexpr.c (potential_constant_expression_1): Check want_rval
	instead of checking if we have a decl.
	* decl2.c (decl_maybe_constant_var_p): Don't consider volatile
	constexpr variables as maybe constant.

	* g++.dg/cpp0x/constexpr-volatile2.C: New test.
	* g++.dg/cpp0x/pr65327.C: Add dg-error.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-volatile2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/cp/decl2.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/cpp0x/pr65327.C