23 lines
962 B
C++
23 lines
962 B
C++
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -triple x86_64-apple-darwin13 -Wno-shift-count-overflow -verify=expected,cxx17 -std=c++17 %s
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -triple x86_64-apple-darwin13 -Wno-shift-count-overflow -verify=expected,cxx2a -std=c++2a %s
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int testNegativeShift(int a) {
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if (a == -5) {
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return 1 << a; // expected-warning{{The result of the left shift is undefined because the right operand is negative}}
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}
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return 0;
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}
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int testNegativeLeftShift(int a) {
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if (a == -3) {
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return a << 1; // cxx17-warning{{The result of the left shift is undefined because the left operand is negative}}
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}
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return 0;
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}
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int testUnrepresentableLeftShift(int a) {
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if (a == 8)
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return a << 30; // cxx17-warning{{The result of the left shift is undefined due to shifting '8' by '30', which is unrepresentable in the unsigned version of the return type 'int'}}
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return 0;
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}
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