Home | History | Annotate | Download | only in SemaCXX
      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" {
      5   int abs(int);
      6   float fabsf(float);
      7 }
      8 
      9 namespace std {
     10   int abs(int);
     11   float abs(float);
     12 }
     13 
     14 void 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