File: warn-unused-parameters.cpp

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (38 lines) | stat: -rw-r--r-- 1,160 bytes parent folder | download | duplicates (16)
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
// RUN: %clang_cc1 -fsyntax-only -Wunused-parameter -verify -std=c++11 %s
template<typename T>
struct X {
  T f0(T x);
  T f1(T x);
  T f2(T);
  template<typename U> U f3(U x);
  template<typename U> U f4(U x);
  template<typename U> U f5(U);
};

template<typename T> T X<T>::f0(T x) { return x; }
template<typename T> T X<T>::f1(T) { return T(); }
template<typename T> T X<T>::f2(T x) { return T(); } // expected-warning{{unused parameter 'x'}}
template<typename T> template<typename U> U X<T>::f3(U x) { return x; }
template<typename T> template<typename U> U X<T>::f4(U) { return U(); }
template<typename T> template<typename U> U X<T>::f5(U x) { return U(); } // expected-warning{{unused parameter 'x'}}

void test_X(X<int> &x, int i) {
  x.f0(i);
  x.f1(i);
  x.f2(i);
  x.f3(i);
  x.f4(i);
  x.f5(i);
}

// Make sure both parameters aren't considered unused.
template <typename... T>
static int test_pack(T... t, T... s)
{
  auto l = [&t...]() { return sizeof...(s); };
  return l();
}

// Do not warn on naked functions.
[[gnu::naked]] int nakedFunction(int a, float b, const char* c) { ; }
__attribute__((naked)) void nakedFunction(int a, int b) { ; }