File: warn-unused-variables.c

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (32 lines) | stat: -rw-r--r-- 706 bytes parent folder | download | duplicates (27)
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
// RUN: %clang_cc1 -fsyntax-only -Wunused-variable -fblocks -verify %s

struct s0 {
	unsigned int	i;
};

int proto(int a, int b);

void f0(void) {
	int	a __attribute__((unused)),
		b; // expected-warning{{unused}}
	return;
}

void f1(void) {
	int	i;
	(void)sizeof(i);
	return;
}

// PR5933
int f2() {
  int X = 4;  // Shouldn't have a bogus 'unused variable X' warning.
  return Y + X; // expected-error {{use of undeclared identifier 'Y'}}
}

int f3() {
  int X1 = 4; 
  (void)(Y1 + X1); // expected-error {{use of undeclared identifier 'Y1'}}
  (void)(^() { int X = 4; }); // expected-warning{{unused}}
  (void)(^() { int X = 4; return Y + X; }); // expected-error {{use of undeclared identifier 'Y'}}
}