Remove cast-as-lvalue extension.
* call.c (build_conditional_expr): Correct formatting.
(convert_like_real): Use lvalue_p, not non_cast_lvalue_p.
(initialize_real): Use real_lvalue_p, not real_non_cast_lvalue_p.
* cp-tree.h (non_cast_lvalue_p): Remove.
(real_non_cast_lvalue_p): Remove.
(non_cast_lvalue_or_else): Remove.
* tree.c (lvalue_p_1): Remove allow_cast_as_lvalue parameter.
(real_lvalue_p): Adjust call to lvalue_p_1.
(non_cast_lvalue_p): Remove.
(non_cast_lvalue_or_else): Remove.
(lvalue_p): Adjust call to lvalue_p_1.
(lvalue_or_else): Simplify.
* typeck.c (build_unary_op): Use lvalue_or_else, not
non_cast_lvalue_or_else.
(build_static_cast): Use real_lvalue_p, not real_non_cast_lvalue_p.
* doc/extend.texi: Document removal of cast-as-lvalue extension in
C++.
* g++.dg/expr/lval1.C: New test.
* g++.dg/ext/lvcast.C: Remove.
From-SVN: r71051