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 
4 extern "C" int abs(int);
5 
6 // Wrong signature
7 int fabsf(int);
8 
9 void test_int(int i, unsigned u, long long ll, float f, double d) {
10   (void)abs(i);
11 
12   // Remove abs call
13   (void)abs(u);
14   // expected-warning@-1{{taking the absolute value of unsigned type 'unsigned int' has no effect}}
15   // expected-note@-2{{remove the call to 'abs' since unsigned values cannot be negative}}
16   // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:9-[[@LINE-3]]:12}:""
17 
18   int llabs;
19   (void)llabs;
20   // Conflict in names, suggest qualified name
21   (void)abs(ll);
22   // 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}}
23   // expected-note@-2{{use function '::llabs' instead}}
24   // expected-note@-3{{please include the header <stdlib.h> or explicitly provide a declaration for 'llabs'}}
25   // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:12}:"::llabs"
26 
27   // Conflict in names, no notes
28   (void)abs(f);
29   // expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
30 
31   // Suggest header.
32   (void)abs(d);
33   // expected-warning@-1{{using integer absolute value function 'abs' when argument is of floating point type}}
34   // expected-note@-2{{use function 'fabs' instead}}
35   // expected-note@-3{{please include the header <math.h> or explicitly provide a declaration for 'fabs'}}
36   // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:9-[[@LINE-4]]:12}:"fabs"
37 }
38