90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
// 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
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// RUN: %clang_cc1 -verify -fsyntax-only -triple x86_64-pc-linux-gnu %s -Wno-conversion -Wfloat-overflow-conversion -DOVERFLOW
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// RUN: %clang_cc1 -verify -fsyntax-only -triple x86_64-pc-linux-gnu %s -Wno-conversion -Wfloat-zero-conversion -DZERO
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float ReturnFloat();
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#ifdef FLOAT_CONVERSION
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bool ReturnBool(float f) {
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return f; //expected-warning{{conversion}}
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}
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char ReturnChar(float f) {
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return f; //expected-warning{{conversion}}
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}
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int ReturnInt(float f) {
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return f; //expected-warning{{conversion}}
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}
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long ReturnLong(float f) {
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return f; //expected-warning{{conversion}}
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}
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void Convert(float f, double d, long double ld) {
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bool b;
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char c;
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int i;
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long l;
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b = f; //expected-warning{{conversion}}
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b = d; //expected-warning{{conversion}}
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b = ld; //expected-warning{{conversion}}
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c = f; //expected-warning{{conversion}}
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c = d; //expected-warning{{conversion}}
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c = ld; //expected-warning{{conversion}}
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i = f; //expected-warning{{conversion}}
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i = d; //expected-warning{{conversion}}
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i = ld; //expected-warning{{conversion}}
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l = f; //expected-warning{{conversion}}
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l = d; //expected-warning{{conversion}}
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l = ld; //expected-warning{{conversion}}
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}
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void Test() {
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int a1 = 10.0/2.0; //expected-warning{{conversion}}
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int a2 = 1.0/2.0; //expected-warning{{conversion}}
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bool a3 = ReturnFloat(); //expected-warning{{conversion}}
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int a4 = 1e30 + 1; //expected-warning{{conversion}}
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}
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void TestConstantFloat() {
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// Don't warn on exact floating literals.
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int a1 = 5.0;
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int a2 = 1e3;
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int a3 = 5.5; // caught by -Wliteral-conversion
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int a4 = 500.44; // caught by -Wliteral-convserion
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int b1 = 5.0 / 1.0; //expected-warning{{conversion}}
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int b2 = 5.0 / 2.0; //expected-warning{{conversion}}
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const float five = 5.0;
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int b3 = five / 1.0; //expected-warning{{conversion}}
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int b4 = five / 2.0; //expected-warning{{conversion}}
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}
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#endif // FLOAT_CONVERSION
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#ifdef ZERO
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void TestZero() {
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const float half = .5;
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int a1 = half; // expected-warning{{implicit conversion from 'const float' to 'int' changes non-zero value from 0.5 to 0}}
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int a2 = 1.0 / 2.0; // expected-warning{{implicit conversion from 'double' to 'int' changes non-zero value from 0.5 to 0}}
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int a3 = 5;
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}
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#endif // ZERO
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#ifdef OVERFLOW
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void TestOverflow() {
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char a = 500.0; // caught by -Wliteral-conversion
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char b = -500.0; // caught by -Wliteral-conversion
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const float LargeNumber = 1024;
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char c = LargeNumber; // expected-warning{{implicit conversion of out of range value from 'const float' to 'char' changes value from 1024 to 127}}
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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}}
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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}}
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}
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#endif // OVERFLOW
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