37 lines · c
1// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only -verify %s -Wabsolute-value2// RUN: %clang_cc1 -triple i686-pc-linux-gnu -fsyntax-only %s -Wabsolute-value -fdiagnostics-parseable-fixits 2>&1 | FileCheck %s3 4int abs(int);5 6// Wrong signature7int 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 call15 (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 notes23 (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 notes27 (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{{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