forked from OSchip/llvm-project
83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
// RUN: %check_clang_tidy %s bugprone-misplaced-widening-cast %t -- -config="{CheckOptions: [{key: bugprone-misplaced-widening-cast.CheckImplicitCasts, value: 0}]}" --
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void func(long arg) {}
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void assign(int a, int b) {
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long l;
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l = a * b;
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l = (long)(a * b);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: either cast from 'int' to 'long' is ineffective, or there is loss of precision before the conversion [bugprone-misplaced-widening-cast]
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l = (long)a * b;
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l = a << 8;
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l = (long)(a << 8);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: either cast from 'int' to 'long'
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l = (long)b << 8;
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l = static_cast<long>(a * b);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: either cast from 'int' to 'long'
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}
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void compare(int a, int b, long c) {
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bool l;
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l = a * b == c;
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l = c == a * b;
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l = (long)(a * b) == c;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: either cast from 'int' to 'long'
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l = c == (long)(a * b);
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// CHECK-MESSAGES: :[[@LINE-1]]:12: warning: either cast from 'int' to 'long'
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l = (long)a * b == c;
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l = c == (long)a * b;
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}
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void init(unsigned int n) {
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long l1 = n << 8;
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long l2 = (long)(n << 8);
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// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: either cast from 'unsigned int' to 'long'
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long l3 = (long)n << 8;
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}
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void call(unsigned int n) {
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func(n << 8);
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func((long)(n << 8));
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// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: either cast from 'unsigned int' to 'long'
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func((long)n << 8);
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}
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long ret(int a) {
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if (a < 0) {
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return a * 1000;
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} else if (a > 0) {
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return (long)(a * 1000);
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// CHECK-MESSAGES: :[[@LINE-1]]:12: warning: either cast from 'int' to 'long'
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} else {
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return (long)a * 1000;
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}
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}
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// Shall not generate an assert. https://bugs.llvm.org/show_bug.cgi?id=33660
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template <class> class A {
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enum Type {};
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static char *m_fn1() { char p = (Type)(&p - m_fn1()); }
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};
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enum DaysEnum {
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MON,
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TUE,
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WED,
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THR,
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FRI,
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SAT,
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SUN
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};
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// Do not warn for int to enum casts.
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void nextDay(DaysEnum day) {
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if (day < SUN)
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day = (DaysEnum)(day + 1);
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if (day < SUN)
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day = static_cast<DaysEnum>(day + 1);
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}
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