1 // RUN: %clang_cc1 -verify -fsyntax-only -triple x86_64-pc-linux-gnu %s -Wno-literal-conversion -Wfloat-conversion -DFLOAT_CONVERSION -DZERO -DBOOL -DCONSTANT_BOOL -DOVERFLOW 2 // RUN: %clang_cc1 -verify -fsyntax-only -triple x86_64-pc-linux-gnu %s -Wno-conversion -Wfloat-overflow-conversion -DOVERFLOW 3 // RUN: %clang_cc1 -verify -fsyntax-only -triple x86_64-pc-linux-gnu %s -Wno-conversion -Wfloat-zero-conversion -DZERO 4 5 float ReturnFloat(); 6 7 #ifdef FLOAT_CONVERSION 8 bool ReturnBool(float f) { 9 return f; //expected-warning{{conversion}} 10 } 11 12 char ReturnChar(float f) { 13 return f; //expected-warning{{conversion}} 14 } 15 16 int ReturnInt(float f) { 17 return f; //expected-warning{{conversion}} 18 } 19 20 long ReturnLong(float f) { 21 return f; //expected-warning{{conversion}} 22 } 23 24 void Convert(float f, double d, long double ld) { 25 bool b; 26 char c; 27 int i; 28 long l; 29 30 b = f; //expected-warning{{conversion}} 31 b = d; //expected-warning{{conversion}} 32 b = ld; //expected-warning{{conversion}} 33 c = f; //expected-warning{{conversion}} 34 c = d; //expected-warning{{conversion}} 35 c = ld; //expected-warning{{conversion}} 36 i = f; //expected-warning{{conversion}} 37 i = d; //expected-warning{{conversion}} 38 i = ld; //expected-warning{{conversion}} 39 l = f; //expected-warning{{conversion}} 40 l = d; //expected-warning{{conversion}} 41 l = ld; //expected-warning{{conversion}} 42 } 43 44 void Test() { 45 int a1 = 10.0/2.0; //expected-warning{{conversion}} 46 int a2 = 1.0/2.0; //expected-warning{{conversion}} 47 bool a3 = ReturnFloat(); //expected-warning{{conversion}} 48 int a4 = 1e30 + 1; //expected-warning{{conversion}} 49 } 50 51 void TestConstantFloat() { 52 // Don't warn on exact floating literals. 53 int a1 = 5.0; 54 int a2 = 1e3; 55 56 int a3 = 5.5; // caught by -Wliteral-conversion 57 int a4 = 500.44; // caught by -Wliteral-convserion 58 59 int b1 = 5.0 / 1.0; //expected-warning{{conversion}} 60 int b2 = 5.0 / 2.0; //expected-warning{{conversion}} 61 62 const float five = 5.0; 63 64 int b3 = five / 1.0; //expected-warning{{conversion}} 65 int b4 = five / 2.0; //expected-warning{{conversion}} 66 } 67 #endif // FLOAT_CONVERSION 68 69 #ifdef ZERO 70 void TestZero() { 71 const float half = .5; 72 int a1 = half; // expected-warning{{implicit conversion from 'const float' to 'int' changes non-zero value from 0.5 to 0}} 73 int a2 = 1.0 / 2.0; // expected-warning{{implicit conversion from 'double' to 'int' changes non-zero value from 0.5 to 0}} 74 int a3 = 5; 75 } 76 #endif // ZERO 77 78 #ifdef OVERFLOW 79 void TestOverflow() { 80 char a = 500.0; // caught by -Wliteral-conversion 81 char b = -500.0; // caught by -Wliteral-conversion 82 83 const float LargeNumber = 1024; 84 char c = LargeNumber; // expected-warning{{implicit conversion of out of range value from 'const float' to 'char' changes value from 1024 to 127}} 85 char d = 400.0 + 400.0; // expected-warning{{implicit conversion of out of range value from 'double' to 'char' changes value from 800 to 127}} 86 87 char e = 1.0 / 0.0; // expected-warning{{implicit conversion of out of range value from 'double' to 'char' changes value from +Inf to 127}} 88 } 89 #endif // OVERFLOW 90
