blob: 8bf54fde9f5995245b29fcd9dff623105ca2e77e [file] [log] [blame]
// RUN: clang -fsyntax-only -verify %s
int foo(int x) {
return x == x; // expected-warning {{self-comparison always results}}
}
int foo2(int x) {
return (x) != (((x))); // expected-warning {{self-comparison always results}}
}
int qux(int x) {
return x < x; // expected-warning {{self-comparison}}
}
int qux2(int x) {
return x > x; // expected-warning {{self-comparison}}
}
int bar(float x) {
return x == x; // no-warning
}
int bar2(float x) {
return x != x; // no-warning
}
// Motivated by <rdar://problem/6703892>, self-comparisons of enum constants
// should not be warned about. These can be expanded from macros, and thus
// are usually deliberate.
int compare_enum() {
enum { A };
return A == A; // no-warning
}