File: cxx1z-aligned-alloc.cpp

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (35 lines) | stat: -rw-r--r-- 902 bytes parent folder | download | duplicates (8)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
// No PCH:
// RUN: %clang_cc1 -pedantic -fsized-deallocation -std=c++1z -include %s -verify %s
//
// With PCH:
// RUN: %clang_cc1 -pedantic -fsized-deallocation -std=c++1z -emit-pch %s -o %t
// RUN: %clang_cc1 -pedantic -fsized-deallocation -std=c++1z -include-pch %t -verify %s

// expected-no-diagnostics

#ifndef HEADER
#define HEADER

using size_t = decltype(sizeof(0));

// Call the overaligned form of 'operator new'.
struct alignas(256) Q { int n; };
void *f() { return new Q; }

// Extract the std::align_val_t type from the implicit declaration of operator delete.
template<typename AlignValT>
AlignValT extract(void (*)(void*, size_t, AlignValT));
using T = decltype(extract(&operator delete));

#else

// ok, calls aligned allocation via placement syntax
void *q = new (T{16}) Q;

namespace std {
  enum class align_val_t : size_t {};
}

using T = std::align_val_t; // ok, same type

#endif