| // RUN: %clang_cc1 -verify -fsyntax-only -std=c2x -triple=x86_64-unknown-linux %s |
| |
| // Regression test for bug where we used to hit an assertion due to shift amount |
| // being larger than 64 bits. We want to see a warning about too large shift |
| // amount. |
| void test1(int *a) { |
| (void)(*a >> 123456789012345678901uwb <= 0); // expected-warning {{shift count >= width of type}} |
| } |
| |
| // Similar to test1 above, but using __uint128_t instead of __BitInt. |
| // We want to see a warning about too large shift amount. |
| void test2(__uint128_t *a) { |
| (void)(*a >> ((__uint128_t)__UINT64_MAX__ + 1) <= 0); // expected-warning {{shift count >= width of type}} |
| } |
| |
| // Regression test for bug where a faulty warning was given. We don't expect to |
| // see any warning in this case. |
| _BitInt(128) test3(_BitInt(128) a) { |
| return a << 12wb; |
| } |
| |
| // Similar to test3 above, but with a too large shift count. We expect to see a |
| // warning in this case. |
| _BitInt(128) test4(_BitInt(128) a) { |
| return a << 129wb; // expected-warning {{shift count >= width of type}} |
| } |