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// RUN: %clang_analyze_cc1 \
// RUN: -analyzer-checker=core,alpha.cplusplus.EnumCastOutOfRange \
// RUN: -std=c++11 -verify %s
enum unscoped_unspecified_t {
unscoped_unspecified_0 = -4,
unscoped_unspecified_1,
unscoped_unspecified_2 = 1,
unscoped_unspecified_3,
unscoped_unspecified_4 = 4
};
enum unscoped_specified_t : int {
unscoped_specified_0 = -4,
unscoped_specified_1,
unscoped_specified_2 = 1,
unscoped_specified_3,
unscoped_specified_4 = 4
};
enum class scoped_unspecified_t {
scoped_unspecified_0 = -4,
scoped_unspecified_1,
scoped_unspecified_2 = 1,
scoped_unspecified_3,
scoped_unspecified_4 = 4
};
enum class scoped_specified_t : int {
scoped_specified_0 = -4,
scoped_specified_1,
scoped_specified_2 = 1,
scoped_specified_3,
scoped_specified_4 = 4
};
struct S {
unscoped_unspecified_t E : 5;
};
void unscopedUnspecified() {
unscoped_unspecified_t InvalidBeforeRangeBegin = static_cast<unscoped_unspecified_t>(-5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t ValidNegativeValue1 = static_cast<unscoped_unspecified_t>(-4); // OK.
unscoped_unspecified_t ValidNegativeValue2 = static_cast<unscoped_unspecified_t>(-3); // OK.
unscoped_unspecified_t InvalidInsideRange1 = static_cast<unscoped_unspecified_t>(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t InvalidInsideRange2 = static_cast<unscoped_unspecified_t>(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t InvalidInsideRange3 = static_cast<unscoped_unspecified_t>(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t ValidPositiveValue1 = static_cast<unscoped_unspecified_t>(1); // OK.
unscoped_unspecified_t ValidPositiveValue2 = static_cast<unscoped_unspecified_t>(2); // OK.
unscoped_unspecified_t InvalidInsideRange4 = static_cast<unscoped_unspecified_t>(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t ValidPositiveValue3 = static_cast<unscoped_unspecified_t>(4); // OK.
unscoped_unspecified_t InvalidAfterRangeEnd = static_cast<unscoped_unspecified_t>(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void unscopedSpecified() {
unscoped_specified_t InvalidBeforeRangeBegin = static_cast<unscoped_specified_t>(-5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t ValidNegativeValue1 = static_cast<unscoped_specified_t>(-4); // OK.
unscoped_specified_t ValidNegativeValue2 = static_cast<unscoped_specified_t>(-3); // OK.
unscoped_specified_t InvalidInsideRange1 = static_cast<unscoped_specified_t>(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t InvalidInsideRange2 = static_cast<unscoped_specified_t>(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t InvalidInsideRange3 = static_cast<unscoped_specified_t>(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t ValidPositiveValue1 = static_cast<unscoped_specified_t>(1); // OK.
unscoped_specified_t ValidPositiveValue2 = static_cast<unscoped_specified_t>(2); // OK.
unscoped_specified_t InvalidInsideRange4 = static_cast<unscoped_specified_t>(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t ValidPositiveValue3 = static_cast<unscoped_specified_t>(4); // OK.
unscoped_specified_t InvalidAfterRangeEnd = static_cast<unscoped_specified_t>(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void scopedUnspecified() {
scoped_unspecified_t InvalidBeforeRangeBegin = static_cast<scoped_unspecified_t>(-5); // expected-warning{{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t ValidNegativeValue1 = static_cast<scoped_unspecified_t>(-4); // OK.
scoped_unspecified_t ValidNegativeValue2 = static_cast<scoped_unspecified_t>(-3); // OK.
scoped_unspecified_t InvalidInsideRange1 = static_cast<scoped_unspecified_t>(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t InvalidInsideRange2 = static_cast<scoped_unspecified_t>(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t InvalidInsideRange3 = static_cast<scoped_unspecified_t>(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t ValidPositiveValue1 = static_cast<scoped_unspecified_t>(1); // OK.
scoped_unspecified_t ValidPositiveValue2 = static_cast<scoped_unspecified_t>(2); // OK.
scoped_unspecified_t InvalidInsideRange4 = static_cast<scoped_unspecified_t>(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t ValidPositiveValue3 = static_cast<scoped_unspecified_t>(4); // OK.
scoped_unspecified_t InvalidAfterRangeEnd = static_cast<scoped_unspecified_t>(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void scopedSpecified() {
scoped_specified_t InvalidBeforeRangeBegin = static_cast<scoped_specified_t>(-5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t ValidNegativeValue1 = static_cast<scoped_specified_t>(-4); // OK.
scoped_specified_t ValidNegativeValue2 = static_cast<scoped_specified_t>(-3); // OK.
scoped_specified_t InvalidInsideRange1 = static_cast<scoped_specified_t>(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t InvalidInsideRange2 = static_cast<scoped_specified_t>(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t InvalidInsideRange3 = static_cast<scoped_specified_t>(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t ValidPositiveValue1 = static_cast<scoped_specified_t>(1); // OK.
scoped_specified_t ValidPositiveValue2 = static_cast<scoped_specified_t>(2); // OK.
scoped_specified_t InvalidInsideRange4 = static_cast<scoped_specified_t>(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t ValidPositiveValue3 = static_cast<scoped_specified_t>(4); // OK.
scoped_specified_t InvalidAfterRangeEnd = static_cast<scoped_specified_t>(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void unscopedUnspecifiedCStyle() {
unscoped_unspecified_t InvalidBeforeRangeBegin = (unscoped_unspecified_t)(-5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t ValidNegativeValue1 = (unscoped_unspecified_t)(-4); // OK.
unscoped_unspecified_t ValidNegativeValue2 = (unscoped_unspecified_t)(-3); // OK.
unscoped_unspecified_t InvalidInsideRange1 = (unscoped_unspecified_t)(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t InvalidInsideRange2 = (unscoped_unspecified_t)(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t InvalidInsideRange3 = (unscoped_unspecified_t)(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t ValidPositiveValue1 = (unscoped_unspecified_t)(1); // OK.
unscoped_unspecified_t ValidPositiveValue2 = (unscoped_unspecified_t)(2); // OK.
unscoped_unspecified_t InvalidInsideRange4 = (unscoped_unspecified_t)(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_unspecified_t ValidPositiveValue3 = (unscoped_unspecified_t)(4); // OK.
unscoped_unspecified_t InvalidAfterRangeEnd = (unscoped_unspecified_t)(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void unscopedSpecifiedCStyle() {
unscoped_specified_t InvalidBeforeRangeBegin = (unscoped_specified_t)(-5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t ValidNegativeValue1 = (unscoped_specified_t)(-4); // OK.
unscoped_specified_t ValidNegativeValue2 = (unscoped_specified_t)(-3); // OK.
unscoped_specified_t InvalidInsideRange1 = (unscoped_specified_t)(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t InvalidInsideRange2 = (unscoped_specified_t)(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t InvalidInsideRange3 = (unscoped_specified_t)(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t ValidPositiveValue1 = (unscoped_specified_t)(1); // OK.
unscoped_specified_t ValidPositiveValue2 = (unscoped_specified_t)(2); // OK.
unscoped_specified_t InvalidInsideRange4 = (unscoped_specified_t)(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
unscoped_specified_t ValidPositiveValue3 = (unscoped_specified_t)(4); // OK.
unscoped_specified_t InvalidAfterRangeEnd = (unscoped_specified_t)(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void scopedUnspecifiedCStyle() {
scoped_unspecified_t InvalidBeforeRangeBegin = (scoped_unspecified_t)(-5); // expected-warning{{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t ValidNegativeValue1 = (scoped_unspecified_t)(-4); // OK.
scoped_unspecified_t ValidNegativeValue2 = (scoped_unspecified_t)(-3); // OK.
scoped_unspecified_t InvalidInsideRange1 = (scoped_unspecified_t)(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t InvalidInsideRange2 = (scoped_unspecified_t)(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t InvalidInsideRange3 = (scoped_unspecified_t)(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t ValidPositiveValue1 = (scoped_unspecified_t)(1); // OK.
scoped_unspecified_t ValidPositiveValue2 = (scoped_unspecified_t)(2); // OK.
scoped_unspecified_t InvalidInsideRange4 = (scoped_unspecified_t)(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_unspecified_t ValidPositiveValue3 = (scoped_unspecified_t)(4); // OK.
scoped_unspecified_t InvalidAfterRangeEnd = (scoped_unspecified_t)(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void scopedSpecifiedCStyle() {
scoped_specified_t InvalidBeforeRangeBegin = (scoped_specified_t)(-5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t ValidNegativeValue1 = (scoped_specified_t)(-4); // OK.
scoped_specified_t ValidNegativeValue2 = (scoped_specified_t)(-3); // OK.
scoped_specified_t InvalidInsideRange1 = (scoped_specified_t)(-2); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t InvalidInsideRange2 = (scoped_specified_t)(-1); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t InvalidInsideRange3 = (scoped_specified_t)(0); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t ValidPositiveValue1 = (scoped_specified_t)(1); // OK.
scoped_specified_t ValidPositiveValue2 = (scoped_specified_t)(2); // OK.
scoped_specified_t InvalidInsideRange4 = (scoped_specified_t)(3); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
scoped_specified_t ValidPositiveValue3 = (scoped_specified_t)(4); // OK.
scoped_specified_t InvalidAfterRangeEnd = (scoped_specified_t)(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
unscoped_unspecified_t unused;
void unusedExpr() {
// following line is not something that EnumCastOutOfRangeChecker should evaluate. checker should either ignore this line
// or process it without producing any warnings. However, compilation will (and should) still generate a warning having
// nothing to do with this checker.
unused; // expected-warning {{expression result unused}}
}
void rangeConstrained1(int input) {
if (input > -5 && input < 5)
auto value = static_cast<scoped_specified_t>(input); // OK. Being conservative, this is a possibly good value.
}
void rangeConstrained2(int input) {
if (input < -5)
auto value = static_cast<scoped_specified_t>(input); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void rangeConstrained3(int input) {
if (input >= -2 && input <= -1)
auto value = static_cast<scoped_specified_t>(input); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void rangeConstrained4(int input) {
if (input >= -2 && input <= 1)
auto value = static_cast<scoped_specified_t>(input); // OK. Possibly 1.
}
void rangeConstrained5(int input) {
if (input >= 1 && input <= 2)
auto value = static_cast<scoped_specified_t>(input); // OK. Strict inner matching.
}
void rangeConstrained6(int input) {
if (input >= 2 && input <= 4)
auto value = static_cast<scoped_specified_t>(input); // OK. The value is possibly 2 or 4, dont warn.
}
void rangeConstrained7(int input) {
if (input >= 3 && input <= 3)
auto value = static_cast<scoped_specified_t>(input); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
void enumBitFieldAssignment() {
S s;
s.E = static_cast<unscoped_unspecified_t>(4); // OK.
s.E = static_cast<unscoped_unspecified_t>(5); // expected-warning {{The value provided to the cast expression is not in the valid range of values for the enum}}
}
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