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llvm-project/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-narrowing...

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[clang-tidy] Allow opt-in or out of some commonly occuring patterns in NarrowingConversionsCheck. Within clang-tidy's NarrowingConversionsCheck. * Allow opt-out of some common occurring patterns, such as: - Implicit casts between types of equivalent bit widths. - Implicit casts occurring from the return of a ::size() method. - Implicit casts on size_type and difference_type. * Allow opt-in of errors within template instantiations. This will help projects adopt these guidelines iteratively. Developed in conjunction with Yitzhak Mandelbaum (ymandel). Patch by Stephen Concannon! Differential Revision: https://reviews.llvm.org/D99543
2021-05-13 02:25:22 +08:00
// RUN: %check_clang_tidy -check-suffix=DEFAULT %s \
// RUN: cppcoreguidelines-narrowing-conversions %t -- \
// RUN: -config='{CheckOptions: [ \
// RUN: ]}'
// RUN: %check_clang_tidy -check-suffix=DISABLED %s \
// RUN: cppcoreguidelines-narrowing-conversions %t -- \
// RUN: -config='{CheckOptions: [ \
// RUN: {key: cppcoreguidelines-narrowing-conversions.WarnOnEquivalentBitWidth, value: 0} \
// RUN: ]}'
void narrowing_equivalent_bitwidth() {
int i;
[clang-tidy] NarrowingConversionsCheck should support inhibiting conversions of mixed integer and floating point types with WarnOnEquivalentBitWidth=0. Also standardize control flow of handleX conversion functions to make it easier to be consistent. Patch by Stephen Concannon! Differential Revision: https://reviews.llvm.org/D103894
2021-06-10 23:12:12 +08:00
unsigned int ui;
i = ui;
[clang-tidy] Allow opt-in or out of some commonly occuring patterns in NarrowingConversionsCheck. Within clang-tidy's NarrowingConversionsCheck. * Allow opt-out of some common occurring patterns, such as: - Implicit casts between types of equivalent bit widths. - Implicit casts occurring from the return of a ::size() method. - Implicit casts on size_type and difference_type. * Allow opt-in of errors within template instantiations. This will help projects adopt these guidelines iteratively. Developed in conjunction with Yitzhak Mandelbaum (ymandel). Patch by Stephen Concannon! Differential Revision: https://reviews.llvm.org/D99543
2021-05-13 02:25:22 +08:00
// CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'unsigned int' to signed type 'int' is implementation-defined [cppcoreguidelines-narrowing-conversions]
// DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
[clang-tidy] NarrowingConversionsCheck should support inhibiting conversions of mixed integer and floating point types with WarnOnEquivalentBitWidth=0. Also standardize control flow of handleX conversion functions to make it easier to be consistent. Patch by Stephen Concannon! Differential Revision: https://reviews.llvm.org/D103894
2021-06-10 23:12:12 +08:00
float f;
i = f;
// CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
// DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
f = i;
// CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'int' to 'float' [cppcoreguidelines-narrowing-conversions]
// DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
long long ll;
double d;
ll = d;
// CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:8: warning: narrowing conversion from 'double' to 'long long' [cppcoreguidelines-narrowing-conversions]
// DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
d = ll;
// CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'long long' to 'double' [cppcoreguidelines-narrowing-conversions]
// DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
[clang-tidy] Allow opt-in or out of some commonly occuring patterns in NarrowingConversionsCheck. Within clang-tidy's NarrowingConversionsCheck. * Allow opt-out of some common occurring patterns, such as: - Implicit casts between types of equivalent bit widths. - Implicit casts occurring from the return of a ::size() method. - Implicit casts on size_type and difference_type. * Allow opt-in of errors within template instantiations. This will help projects adopt these guidelines iteratively. Developed in conjunction with Yitzhak Mandelbaum (ymandel). Patch by Stephen Concannon! Differential Revision: https://reviews.llvm.org/D99543
2021-05-13 02:25:22 +08:00
}
void most_narrowing_is_not_ok() {
int i;
[clang-tidy] NarrowingConversionsCheck should support inhibiting conversions of mixed integer and floating point types with WarnOnEquivalentBitWidth=0. Also standardize control flow of handleX conversion functions to make it easier to be consistent. Patch by Stephen Concannon! Differential Revision: https://reviews.llvm.org/D103894
2021-06-10 23:12:12 +08:00
long long ui;
i = ui;
[clang-tidy] Allow opt-in or out of some commonly occuring patterns in NarrowingConversionsCheck. Within clang-tidy's NarrowingConversionsCheck. * Allow opt-out of some common occurring patterns, such as: - Implicit casts between types of equivalent bit widths. - Implicit casts occurring from the return of a ::size() method. - Implicit casts on size_type and difference_type. * Allow opt-in of errors within template instantiations. This will help projects adopt these guidelines iteratively. Developed in conjunction with Yitzhak Mandelbaum (ymandel). Patch by Stephen Concannon! Differential Revision: https://reviews.llvm.org/D99543
2021-05-13 02:25:22 +08:00
// CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'long long' to signed type 'int' is implementation-defined [cppcoreguidelines-narrowing-conversions]
// CHECK-MESSAGES-DISABLED: :[[@LINE-2]]:7: warning: narrowing conversion from 'long long' to signed type 'int' is implementation-defined [cppcoreguidelines-narrowing-conversions]
}