1// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -verify %s -Wabsolute-value
2// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only %s -Wabsolute-value -fdiagnostics-parseable-fixits 2>&1 | FileCheck %s
3
4int abs(int);
5
6// Wrong signature
7int fabsf(int);
8// expected-warning@-1{{incompatible redeclaration of library function 'fabsf'}}
9// expected-note@-2{{'fabsf' is a builtin with type 'float (float)'}}
10
11void test_int(int i, unsigned u, long long ll, float f, double d) {
12  (void)abs(i);
13
14  // Remove abs call
15  (void)abs(u);
16  // expected-warning@-1{{taking the absolute value of unsigned type 'unsigned int' has no effect}}
17  // expected-note@-2{{remove the call to 'abs' since unsigned values cannot be negative}}
18  // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:9-[[@LINE-3]]:12}:""
19
20  int llabs;
21  (void)llabs;
22  // Conflict in names, no notes
23  (void)abs(ll);
24  // expected-warning@-1{{absolute value function 'abs' given an argument of type 'long long' but has parameter of type 'int' which may cause truncation of value}}
25
26  // Conflict in names, no notes
27  (void)abs(f);
28  // expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
29
30  // Suggest header.
31  (void)abs(d);
32  // expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
33  // expected-note@-2{{use function 'fabs' instead}}
34  // expected-note@-3{{please include the header <math.h> or explicitly provide a declaration for 'fabs'}}
35  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:12}:"fabs"
36}
37