File: attr-exclude_from_explicit_instantiation.merge_redeclarations.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 (43 lines) | stat: -rw-r--r-- 1,350 bytes parent folder | download | duplicates (22)
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
36
37
38
39
40
41
42
43
// RUN: %clang_cc1 -fsyntax-only -verify %s

// Test that we properly merge the exclude_from_explicit_instantiation
// attribute on redeclarations.

#define EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__((exclude_from_explicit_instantiation))

template <class T>
struct Foo {
  // Declaration without the attribute, definition with the attribute.
  void func1();

  // Declaration with the attribute, definition without the attribute.
  EXCLUDE_FROM_EXPLICIT_INSTANTIATION void func2();

  // Declaration with the attribute, definition with the attribute.
  EXCLUDE_FROM_EXPLICIT_INSTANTIATION void func3();
};

template <class T>
EXCLUDE_FROM_EXPLICIT_INSTANTIATION void Foo<T>::func1() {
  using Fail = typename T::invalid; // expected-error{{no type named 'invalid' in 'Empty'}}
}

template <class T>
void Foo<T>::func2() {
  using Fail = typename T::invalid; // expected-error{{no type named 'invalid' in 'Empty'}}
}

template <class T>
EXCLUDE_FROM_EXPLICIT_INSTANTIATION void Foo<T>::func3() {
  using Fail = typename T::invalid; // expected-error{{no type named 'invalid' in 'Empty'}}
}

struct Empty { };
extern template struct Foo<Empty>;

int main() {
  Foo<Empty> foo;
  foo.func1(); // expected-note{{in instantiation of}}
  foo.func2(); // expected-note{{in instantiation of}}
  foo.func3(); // expected-note{{in instantiation of}}
}