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[libcxx] Annotate c++17 aligned new/delete operators with availability

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attribute.

This is needed because older versions of libc++ do not have these
operators. If users target an older deployment target and try to compile
programs in which these operators are explicitly called, the compiler
will complain.

The following is the list of minimum deployment targets for the four
OSes:

macosx: 10.13
ios: 11.0
tvos: 11.0
watchos: 4.0

rdar://problem/32664169

Differential Revision: https://reviews.llvm.org/D34556

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@306310 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka
2017-06-26 17:39:48 +00:00
parent 2ac0ed06e2
commit a028f3c8d9
3 changed files with 52 additions and 10 deletions
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36
test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_deployment.fail.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// REQUIRES: availability=macosx10.12
// test availability of new/delete operators introduced in c++17.
#include <new>
int main () {
int *p0 = new ((std::align_val_t)16) int(1);
(void)p0;
int *p1 = new ((std::align_val_t)16) int[1];
(void)p1;
// expected-error@-4 {{call to unavailable function 'operator new': introduced in macOS 10.13}}
// expected-note@new:* {{candidate function has been explicitly made unavailable}}
// expected-note@new:* {{candidate function not viable: no known conversion from 'std::align_val_t' to 'const std::nothrow_t' for 2nd argument}}
// expected-note@new:* {{candidate function not viable: no known conversion from 'std::align_val_t' to 'void *' for 2nd argument}}
// expected-note@new:* {{candidate function not viable: requires single argument '__sz', but 2 arguments were provided}}
// expected-note@new:* {{candidate function not viable: requires 3 arguments, but 2 were provided}}
// expected-error@-9 {{call to unavailable function 'operator new[]': introduced in macOS 10.13}}
// expected-note@new:* {{candidate function has been explicitly made unavailable}}
// expected-note@new:* {{candidate function not viable: no known conversion from 'std::align_val_t' to 'const std::nothrow_t' for 2nd argument}}
// expected-note@new:* {{candidate function not viable: no known conversion from 'std::align_val_t' to 'void *' for 2nd argument}}
// expected-note@new:* {{candidate function not viable: requires single argument '__sz', but 2 arguments were provided}}
// expected-note@new:* {{candidate function not viable: requires 3 arguments, but 2 were provided}}
return 0;
}