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view clang/test/SemaCXX/attr-weakref.cpp @ 222:81f6424ef0e3 llvm-original
LLVM original branch
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Sun, 18 Jul 2021 22:10:01 +0900 (2021-07-18) |
parents | 1d019706d866 |
children |
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// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify -std=c++11 %s // GCC will accept anything as the argument of weakref. Should we // check for an existing decl? static int a1() __attribute__((weakref ("foo"))); static int a2() __attribute__((weakref, alias ("foo"))); static int a3 __attribute__((weakref ("foo"))); static int a4 __attribute__((weakref, alias ("foo"))); // gcc rejects, clang accepts static int a5 __attribute__((alias ("foo"), weakref)); // this is pointless, but accepted by gcc. We reject it. static int a6 __attribute__((weakref)); //expected-error {{weakref declaration of 'a6' must also have an alias attribute}} // gcc warns, clang rejects void f(void) { static int a __attribute__((weakref ("v2"))); // expected-error {{declaration of 'a' must be in a global context}} } // both gcc and clang reject class c { static int a __attribute__((weakref ("v2"))); // expected-error {{declaration of 'a' must be in a global context}} static int b() __attribute__((weakref ("f3"))); // expected-error {{declaration of 'b' must be in a global context}} }; int a7() __attribute__((weakref ("f1"))); // expected-error {{weakref declaration must have internal linkage}} int a8 __attribute__((weakref ("v1"))); // expected-error {{weakref declaration must have internal linkage}} // gcc accepts this int a9 __attribute__((weakref)); // expected-error {{weakref declaration of 'a9' must also have an alias attribute}} static int a10(); int a10() __attribute__((weakref ("foo"))); static int v __attribute__((weakref(a1), alias("foo"))); // expected-error {{'weakref' attribute requires a string}} __attribute__((weakref ("foo"))) auto a11 = 1; // expected-error {{weakref declaration must have internal linkage}}