| // 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 |
| // 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 |
| |
| int testNegativeShift(int a) { |
| if (a == -5) { |
| return 1 << a; // expected-warning{{The result of the left shift is undefined because the right operand is negative}} |
| } |
| return 0; |
| } |
| |
| int testNegativeLeftShift(int a) { |
| if (a == -3) { |
| return a << 1; // cxx17-warning{{The result of the left shift is undefined because the left operand is negative}} |
| } |
| return 0; |
| } |
| |
| int testUnrepresentableLeftShift(int a) { |
| if (a == 8) |
| 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'}} |
| return 0; |
| } |
