39 lines · cpp
1// RUN: %clang_cc1 -fblocks -fsyntax-only -Wunused-but-set-parameter -verify %s2 3int f0(int x,4 int y, // expected-warning{{parameter 'y' set but not used}}5 int z __attribute__((unused))) {6 y = 0;7 return x;8}9 10void f1(void) {11 (void)^(int x,12 int y, // expected-warning{{parameter 'y' set but not used}}13 int z __attribute__((unused))) {14 y = 0;15 return x;16 };17}18 19struct S {20 int i;21};22 23// In C++, don't warn for a struct (following gcc).24void f3(struct S s) {25 struct S t;26 s = t;27}28 29// Also don't warn for a reference.30void f4(int &x) {31 x = 0;32}33 34// Make sure this doesn't warn.35struct A {36 int i;37 A(int j) : i(j) {}38};39