File: self-comparison.cpp

package info (click to toggle)
llvm-toolchain-3.5 1%3A3.5.2-3~bpo8%2B2
  • links: PTS, VCS
  • area: main
  • in suites: jessie-backports
  • size: 283,276 kB
  • sloc: cpp: 1,884,580; ansic: 310,787; objc: 86,612; python: 79,608; asm: 65,866; sh: 9,829; makefile: 6,068; perl: 5,589; ml: 5,254; pascal: 3,285; lisp: 1,640; xml: 686; cs: 239; csh: 117
file content (23 lines) | stat: -rw-r--r-- 603 bytes parent folder | download | duplicates (11)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
// RUN: %clang_cc1 -fsyntax-only -verify %s

int foo(int x) {
  return x == x; // expected-warning {{self-comparison always evaluates to true}}
}

struct X {
  bool operator==(const X &x);
};

struct A {
  int x;
  X x2;
  int a[3];
  int b[3];
  bool f() { return x == x; } // expected-warning {{self-comparison always evaluates to true}}
  bool g() { return x2 == x2; } // no-warning
  bool h() { return a == b; } // expected-warning {{array comparison always evaluates to false}}
  bool i() {
    int c[3];
    return a == c; // expected-warning {{array comparison always evaluates to false}}
  }
};