forked from OSchip/llvm-project
84 lines
3.2 KiB
C++
84 lines
3.2 KiB
C++
// RUN: %check_clang_tidy %s cppcoreguidelines-narrowing-conversions %t \
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// RUN: -- -- -target x86_64-unknown-linux -funsigned-char
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void narrow_integer_to_unsigned_integer_is_ok() {
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signed char sc;
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short s;
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int i;
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long l;
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long long ll;
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char c;
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unsigned short us;
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unsigned int ui;
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unsigned long ul;
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unsigned long long ull;
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ui = sc;
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c = s;
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c = i;
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c = l;
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c = ll;
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c = c;
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c = us;
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c = ui;
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c = ul;
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c = ull;
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}
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void narrow_integer_to_signed_integer_is_not_ok() {
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signed char sc;
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short s;
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int i;
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long l;
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long long ll;
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char c;
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unsigned short us;
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unsigned int ui;
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unsigned long ul;
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unsigned long long ull;
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sc = sc;
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sc = s;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'short' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = i;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'int' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = l;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'long' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = ll;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'long long' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = c;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'char' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = us;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'unsigned short' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = ui;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'unsigned int' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = ul;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'unsigned long' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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sc = ull;
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'unsigned long long' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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}
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void narrow_constant_to_unsigned_integer_is_ok() {
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char c1 = -128; // unsigned dst type is well defined.
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char c2 = 127; // unsigned dst type is well defined.
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char c3 = -129; // unsigned dst type is well defined.
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char c4 = 128; // unsigned dst type is well defined.
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unsigned char uc1 = 0;
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unsigned char uc2 = 255;
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unsigned char uc3 = -1; // unsigned dst type is well defined.
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unsigned char uc4 = 256; // unsigned dst type is well defined.
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signed char sc = 128;
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: narrowing conversion from constant value 128 (0x00000080) of type 'int' to signed type 'signed char' is implementation-defined [cppcoreguidelines-narrowing-conversions]
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}
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void narrow_conditional_operator_contant_to_unsigned_is_ok(bool b) {
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// conversion to unsigned char type is well defined.
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char c1 = b ? 1 : 0;
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char c2 = b ? 1 : 256;
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char c3 = b ? -1 : 0;
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}
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