File: cxx2a-lambda-equals-this.cpp

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (23 lines) | stat: -rw-r--r-- 620 bytes parent folder | download | duplicates (17) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
// RUN: %clang_cc1 -std=c++2a -verify %s -Wdeprecated

// This test does two things.
// Deleting the copy constructor ensures that an [=, this] capture doesn't copy the object.
// Accessing a member variable from the lambda ensures that the capture actually works.
class A {
  A(const A &) = delete;
  int i;

  void func() {
    auto L = [=, this]() -> int { return i; };
    L();
  }
};

struct B {
  int i;
  void f() {
    (void) [=] { // expected-note {{add an explicit capture of 'this'}}
      return i; // expected-warning {{implicit capture of 'this' with a capture default of '=' is deprecated}}
    };
  }
};