forked from OSchip/llvm-project
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
// RUN: %check_clang_tidy %s cppcoreguidelines-narrowing-conversions %t
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float ceil(float);
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namespace std {
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double ceil(double);
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long double floor(long double);
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} // namespace std
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namespace floats {
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struct ConvertsToFloat {
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operator float() const { return 0.5; }
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};
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float operator "" _Pa(unsigned long long);
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void not_ok(double d) {
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int i = 0;
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i = d;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'double' to 'int' [cppcoreguidelines-narrowing-conversions]
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i = 0.5f;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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i = static_cast<float>(d);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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i = ConvertsToFloat();
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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i = 15_Pa;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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}
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void not_ok_binary_ops(double d) {
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int i = 0;
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i += 0.5;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'double' to 'int' [cppcoreguidelines-narrowing-conversions]
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i += 0.5f;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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i += d;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'double' to 'int' [cppcoreguidelines-narrowing-conversions]
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// We warn on the following even though it's not dangerous because there is no
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// reason to use a double literal here.
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// TODO(courbet): Provide an automatic fix.
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i += 2.0;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'double' to 'int' [cppcoreguidelines-narrowing-conversions]
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i += 2.0f;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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i *= 0.5f;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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i /= 0.5f;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
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i += (double)0.5f;
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: narrowing conversion from 'double' to 'int' [cppcoreguidelines-narrowing-conversions]
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}
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void ok(double d) {
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int i = 0;
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i = 1;
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i = static_cast<int>(0.5);
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i = static_cast<int>(d);
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i = std::ceil(0.5);
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i = ::std::floor(0.5);
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{
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using std::ceil;
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i = ceil(0.5f);
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}
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i = ceil(0.5f);
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}
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void ok_binary_ops(double d) {
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int i = 0;
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i += 1;
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i += static_cast<int>(0.5);
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i += static_cast<int>(d);
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i += (int)d;
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i += std::ceil(0.5);
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i += ::std::floor(0.5);
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{
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using std::ceil;
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i += ceil(0.5f);
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}
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i += ceil(0.5f);
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}
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// We're bailing out in templates and macros.
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template <typename T1, typename T2>
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void f(T1 one, T2 two) {
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one += two;
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}
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void template_context() {
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f(1, 2);
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f(1, .5);
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}
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#define DERP(i, j) (i += j)
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void macro_context() {
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int i = 0;
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DERP(i, 2);
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DERP(i, .5);
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}
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} // namespace floats
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