27 lines · c
1// RUN: %clang_cc1 -verify -fsyntax-only -std=c2x -triple=x86_64-unknown-linux %s2 3// Regression test for bug where we used to hit an assertion due to shift amount4// being larger than 64 bits. We want to see a warning about too large shift5// amount.6void test1(int *a) {7 (void)(*a >> 123456789012345678901uwb <= 0); // expected-warning {{shift count >= width of type}}8}9 10// Similar to test1 above, but using __uint128_t instead of __BitInt.11// We want to see a warning about too large shift amount.12void test2(__uint128_t *a) {13 (void)(*a >> ((__uint128_t)__UINT64_MAX__ + 1) <= 0); // expected-warning {{shift count >= width of type}}14}15 16// Regression test for bug where a faulty warning was given. We don't expect to17// see any warning in this case.18_BitInt(128) test3(_BitInt(128) a) {19 return a << 12wb;20}21 22// Similar to test3 above, but with a too large shift count. We expect to see a23// warning in this case.24_BitInt(128) test4(_BitInt(128) a) {25 return a << 129wb; // expected-warning {{shift count >= width of type}}26}27