mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-29 01:26:07 +00:00
6a6376b17c
C++11 requires const objects to have a user-provided constructor, even for classes without any fields. DR 253 relaxes this to say "If the implicit default constructor initializes all subobjects, no initializer should be required." clang is currently the only compiler that implements this C++11 rule, and e.g. libstdc++ relies on something like DR 253 to compile in newer versions. This change makes it possible to build code that says `const vector<int> v;' again when using libstdc++5.2 and _GLIBCXX_DEBUG (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60284). Fixes PR23381. http://reviews.llvm.org/D16552 llvm-svn: 261297
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
|
|
|
|
struct A {
|
|
A() : value(), cvalue() { } // expected-error {{reference to type 'int' requires an initializer}}
|
|
int &value;
|
|
const int cvalue;
|
|
};
|
|
|
|
struct B {
|
|
int field;
|
|
};
|
|
|
|
struct X {
|
|
X() { } // expected-error {{constructor for 'X' must explicitly initialize the reference member 'value'}} \
|
|
// expected-error {{constructor for 'X' must explicitly initialize the const member 'cvalue'}} \
|
|
// expected-error {{constructor for 'X' must explicitly initialize the reference member 'b'}} \
|
|
// expected-error {{constructor for 'X' must explicitly initialize the const member 'cb'}}
|
|
int &value; // expected-note{{declared here}}
|
|
const int cvalue; // expected-note{{declared here}}
|
|
B& b; // expected-note{{declared here}}
|
|
const B cb; // expected-note{{declared here}}
|
|
};
|
|
|
|
|
|
// PR5924
|
|
struct bar {};
|
|
bar xxx();
|
|
|
|
struct foo {
|
|
foo_t a; // expected-error {{unknown type name 'foo_t'}}
|
|
foo() : a(xxx()) {} // no error here.
|
|
};
|