// RUN: %clang_analyze_cc1 \
// RUN: -analyzer-checker=core,optin.core.EnumCastOutOfRange \
// RUN: -std=c++11 -verify %s
// expected-note@+1 + {{enum declared here}}
enum unscoped_unspecified_t {
unscoped_unspecified_0 = -4,
unscoped_unspecified_1,
unscoped_unspecified_2 = 1,
unscoped_unspecified_3,
unscoped_unspecified_4 = 4
};
// expected-note@+1 + {{enum declared here}}
enum unscoped_specified_t : int {
unscoped_specified_0 = -4,
unscoped_specified_1,
unscoped_specified_2 = 1,
unscoped_specified_3,
unscoped_specified_4 = 4
};
// expected-note@+1 + {{enum declared here}}
enum class scoped_unspecified_t {
scoped_unspecified_0 = -4,
scoped_unspecified_1,
scoped_unspecified_2 = 1,
scoped_unspecified_3,
scoped_unspecified_4 = 4
};
// expected-note@+1 + {{enum declared here}}
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 '-5' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
unscoped_unspecified_t InvalidInsideRange2 = static_cast<unscoped_unspecified_t>(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
unscoped_unspecified_t InvalidInsideRange3 = static_cast<unscoped_unspecified_t>(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
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 '5' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
}
void unscopedSpecified() {
unscoped_specified_t InvalidBeforeRangeBegin = static_cast<unscoped_specified_t>(-5); // expected-warning {{The value '-5' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
unscoped_specified_t InvalidInsideRange2 = static_cast<unscoped_specified_t>(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
unscoped_specified_t InvalidInsideRange3 = static_cast<unscoped_specified_t>(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
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 '5' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
}
void scopedUnspecified() {
scoped_unspecified_t InvalidBeforeRangeBegin = static_cast<scoped_unspecified_t>(-5); // expected-warning{{The value '-5' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
scoped_unspecified_t InvalidInsideRange2 = static_cast<scoped_unspecified_t>(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
scoped_unspecified_t InvalidInsideRange3 = static_cast<scoped_unspecified_t>(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
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 '5' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
}
void scopedSpecified() {
scoped_specified_t InvalidBeforeRangeBegin = static_cast<scoped_specified_t>(-5); // expected-warning {{The value '-5' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
scoped_specified_t InvalidInsideRange2 = static_cast<scoped_specified_t>(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
scoped_specified_t InvalidInsideRange3 = static_cast<scoped_specified_t>(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
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 '5' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
}
void unscopedUnspecifiedCStyle() {
unscoped_unspecified_t InvalidBeforeRangeBegin = (unscoped_unspecified_t)(-5); // expected-warning {{The value '-5' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
unscoped_unspecified_t InvalidInsideRange2 = (unscoped_unspecified_t)(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
unscoped_unspecified_t InvalidInsideRange3 = (unscoped_unspecified_t)(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
unscoped_unspecified_t ValidPositiveValue3 = (unscoped_unspecified_t)(4); // OK.
unscoped_unspecified_t InvalidAfterRangeEnd = (unscoped_unspecified_t)(5); // expected-warning {{The value '5' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
}
void unscopedSpecifiedCStyle() {
unscoped_specified_t InvalidBeforeRangeBegin = (unscoped_specified_t)(-5); // expected-warning {{The value '-5' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
unscoped_specified_t InvalidInsideRange2 = (unscoped_specified_t)(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
unscoped_specified_t InvalidInsideRange3 = (unscoped_specified_t)(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
unscoped_specified_t ValidPositiveValue3 = (unscoped_specified_t)(4); // OK.
unscoped_specified_t InvalidAfterRangeEnd = (unscoped_specified_t)(5); // expected-warning {{The value '5' provided to the cast expression is not in the valid range of values for 'unscoped_specified_t'}}
}
void scopedUnspecifiedCStyle() {
scoped_unspecified_t InvalidBeforeRangeBegin = (scoped_unspecified_t)(-5); // expected-warning{{The value '-5' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
scoped_unspecified_t InvalidInsideRange2 = (scoped_unspecified_t)(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
scoped_unspecified_t InvalidInsideRange3 = (scoped_unspecified_t)(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
scoped_unspecified_t ValidPositiveValue3 = (scoped_unspecified_t)(4); // OK.
scoped_unspecified_t InvalidAfterRangeEnd = (scoped_unspecified_t)(5); // expected-warning {{The value '5' provided to the cast expression is not in the valid range of values for 'scoped_unspecified_t'}}
}
void scopedSpecifiedCStyle() {
scoped_specified_t InvalidBeforeRangeBegin = (scoped_specified_t)(-5); // expected-warning {{The value '-5' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
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 '-2' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
scoped_specified_t InvalidInsideRange2 = (scoped_specified_t)(-1); // expected-warning {{The value '-1' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
scoped_specified_t InvalidInsideRange3 = (scoped_specified_t)(0); // expected-warning {{The value '0' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
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 '3' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
scoped_specified_t ValidPositiveValue3 = (scoped_specified_t)(4); // OK.
scoped_specified_t InvalidAfterRangeEnd = (scoped_specified_t)(5); // expected-warning {{The value '5' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
}
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 'scoped_specified_t'}}
}
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 'scoped_specified_t'}}
}
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 '3' provided to the cast expression is not in the valid range of values for 'scoped_specified_t'}}
}
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 '5' provided to the cast expression is not in the valid range of values for 'unscoped_unspecified_t'}}
}
enum class empty_unspecified {};
enum class empty_specified: char {};
enum class empty_specified_unsigned: unsigned char {};
void ignore_unused(...);
void empty_enums_init_with_zero_should_not_warn() {
auto eu = static_cast<empty_unspecified>(0); //should always be OK to zero initialize any enum
auto ef = static_cast<empty_specified>(0);
auto efu = static_cast<empty_specified_unsigned>(0);
ignore_unused(eu, ef, efu);
}
//Test the example from checkers.rst:
enum WidgetKind { A=1, B, C, X=99 }; // expected-note {{enum declared here}}
void foo() {
WidgetKind c = static_cast<WidgetKind>(3); // OK
WidgetKind x = static_cast<WidgetKind>(99); // OK
WidgetKind d = static_cast<WidgetKind>(4); // expected-warning {{The value '4' provided to the cast expression is not in the valid range of values for 'WidgetKind'}}
ignore_unused(c, x, d);
}
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