bf8d83098f
P1064R0 - Allowing Virtual Function Calls in Constant Expressions * call.c (build_over_call): No longer check if we're outside a template function. * class.c (build_vtbl_initializer): Build vtable's constructor with indexes. * constexpr.c (cxx_eval_constant_expression): Don't ignore _vptr's initializer. Handle OBJ_TYPE_REF. (potential_constant_expression_1): Handle OBJ_TYPE_REF. * decl.c (maybe_commonize_var): Bail out for any DECL_ARTIFICIAL. (initialize_artificial_var): Mark the variable as constexpr. (grokdeclarator): Change error to pedwarn. Only warn when pedantic and not C++2a. * gimple-fold.c (gimple_get_virt_method_for_vtable): Adjust assert. * g++.dg/cpp0x/constexpr-virtual5.C: Adjust dg-error. * g++.dg/cpp2a/constexpr-virtual1.C: New test. * g++.dg/cpp2a/constexpr-virtual2.C: New test. * g++.dg/cpp2a/constexpr-virtual3.C: New test. * g++.dg/cpp2a/constexpr-virtual4.C: New test. * g++.dg/cpp2a/constexpr-virtual5.C: New test. * g++.dg/cpp2a/constexpr-virtual6.C: New test. * g++.dg/cpp2a/constexpr-virtual7.C: New test. * g++.dg/cpp2a/constexpr-virtual8.C: New test. * g++.dg/cpp2a/constexpr-virtual9.C: New test. * g++.dg/diagnostic/virtual-constexpr.C: Skip for C++2a. Use -pedantic-errors. Adjust dg-error. From-SVN: r264408
26 lines
383 B
C
26 lines
383 B
C
// P1064R0
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// { dg-do compile }
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// { dg-options "-std=c++2a" }
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struct X1
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{
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constexpr virtual X1 const *f() const { return this; }
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};
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struct Y
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{
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int m = 0;
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};
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struct X2: public Y, public X1
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{
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constexpr virtual X2 const *f() const { return this; }
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};
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constexpr X1 x1;
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static_assert(x1.f() == &x1);
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constexpr X2 x2;
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constexpr X1 const& r2 = x2;
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static_assert(r2.f() == &r2);
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