17 lines · cpp
1// RUN: %clang_cc1 %s -verify -fsyntax-only2// RUN: %clang_cc1 %s -verify -fsyntax-only -fexperimental-new-constant-interpreter3 4extern const int W1 __attribute__((weak)) = 10; // expected-note {{declared here}}5 6static_assert(W1 == 10, ""); // expected-error {{static assertion expression is not an integral constant expression}}7 // expected-note@-1 {{initializer of weak variable 'W1' is not considered constant because it may be different at runtime}}8 9extern const int W2 __attribute__((weak)) = 20;10 11int S2[W2]; // expected-error {{variable length array declaration not allowed at file scope}}12 13extern const int W3 __attribute__((weak)) = 30; // expected-note {{declared here}}14 15constexpr int S3 = W3; // expected-error {{constexpr variable 'S3' must be initialized by a constant expression}}16 // expected-note@-1 {{initializer of weak variable 'W3' is not considered constant because it may be different at runtime}}17