1 // RUN: %clang_cc1 -fsyntax-only -Wunused-parameter -Wused-but-marked-unused -Wunused -verify %s 2 3 void f1(void) { 4 int x, y, z; 5 #pragma unused(x) 6 #pragma unused(y, z) 7 8 int w; // expected-warning {{unused}} 9 #pragma unused w // expected-warning{{missing '(' after '#pragma unused' - ignoring}} 10 } 11 12 void f2(void) { 13 int x, y; // expected-warning {{unused}} expected-warning {{unused}} 14 #pragma unused(x,) // expected-warning{{expected '#pragma unused' argument to be a variable name}} 15 #pragma unused() // expected-warning{{expected '#pragma unused' argument to be a variable name}} 16 } 17 18 void f3(void) { 19 #pragma unused(x) // expected-warning{{undeclared variable 'x' used as an argument for '#pragma unused'}} 20 } 21 22 void f4(void) { 23 int w; // expected-warning {{unused}} 24 #pragma unused((w)) // expected-warning{{expected '#pragma unused' argument to be a variable name}} 25 } 26 27 void f6(void) { 28 int z; // no-warning 29 { 30 #pragma unused(z) // no-warning 31 } 32 } 33 34 void f7() { 35 int y; 36 #pragma unused(undeclared, undefined, y) // expected-warning{{undeclared variable 'undeclared' used as an argument for '#pragma unused'}} expected-warning{{undeclared variable 'undefined' used as an argument for '#pragma unused'}} 37 } 38 39 int f8(int x) { // expected-warning{{unused parameter 'x'}} 40 return 0; 41 } 42 43 int f9(int x) { 44 return x; 45 } 46 47 int f10(int x) { 48 #pragma unused(x) 49 return 0; 50 } 51 52 int f11(int x) { 53 #pragma unused(x) 54 return x; // expected-warning{{'x' was marked unused but was used}} 55 } 56 57 int f12(int x) { 58 int y = x; 59 #pragma unused(x) // expected-warning{{'x' was marked unused but was used}} 60 return y; 61 } 62 63 // rdar://8793832 64 static int glob_var = 0; 65 #pragma unused(glob_var) 66
