File: warn-unused-but-set-parameters-cpp.cpp

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (38 lines) | stat: -rw-r--r-- 673 bytes parent folder | download | duplicates (19) 
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 -fblocks -fsyntax-only -Wunused-but-set-parameter -verify %s

int f0(int x,
       int y, // expected-warning{{parameter 'y' set but not used}}
       int z __attribute__((unused))) {
  y = 0;
  return x;
}

void f1(void) {
  (void)^(int x,
          int y, // expected-warning{{parameter 'y' set but not used}}
          int z __attribute__((unused))) {
    y = 0;
    return x;
  };
}

struct S {
  int i;
};

// In C++, don't warn for a struct (following gcc).
void f3(struct S s) {
  struct S t;
  s = t;
}

// Also don't warn for a reference.
void f4(int &x) {
  x = 0;
}

// Make sure this doesn't warn.
struct A {
  int i;
  A(int j) : i(j) {}
};