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
4extern "C" {
5  int abs(int);
6  float fabsf(float);
7}
8
9namespace std {
10  int abs(int);
11  float abs(float);
12}
13
14void test(long long ll, double d, int i, float f) {
15  // Suggest including cmath
16  (void)abs(d);
17  // expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
18  // expected-note@-2{{use function 'std::abs' instead}}
19  // expected-note@-3{{please include the header <cmath> or explicitly provide a declaration for 'std::abs'}}
20  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:12}:"std::abs"
21
22  (void)fabsf(d);
23  // expected-warning@-1{{absolute value function 'fabsf' given an argument of type 'double' but has parameter of type 'float' which may cause truncation of value}}
24  // expected-note@-2{{use function 'std::abs' instead}}
25  // expected-note@-3{{please include the header <cmath> or explicitly provide a declaration for 'std::abs'}}
26  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:14}:"std::abs"
27
28  // Suggest including cstdlib
29  (void)abs(ll);
30  // 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}}
31  // expected-note@-2{{use function 'std::abs' instead}}
32  // expected-note@-3{{please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'}}
33  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:12}:"std::abs"
34  (void)fabsf(ll);
35  // expected-warning@-1{{using floating point absolute value function 'fabsf' when argument is of integer type}}
36  // expected-note@-2{{use function 'std::abs' instead}}
37  // expected-note@-3{{please include the header <cstdlib> or explicitly provide a declaration for 'std::abs'}}
38  // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:14}:"std::abs"
39
40  // Proper function already called, no warnings.
41  (void)abs(i);
42  (void)fabsf(f);
43
44  // Declarations found, suggest name change.
45  (void)fabsf(i);
46  // expected-warning@-1{{using floating point absolute value function 'fabsf' when argument is of integer type}}
47  // expected-note@-2{{use function 'std::abs' instead}}
48  // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:9-[[@LINE-3]]:14}:"std::abs"
49  (void)abs(f);
50  // expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
51  // expected-note@-2{{use function 'std::abs' instead}}
52  // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:9-[[@LINE-3]]:12}:"std::abs"
53}
54