1*67e74705SXin Li /* RUN: %clang_cc1 -E %s -DNO_ERRORS -Werror -Wundef 2*67e74705SXin Li RUN: not %clang_cc1 -E %s 3*67e74705SXin Li */ 4*67e74705SXin Li 5*67e74705SXin Li #ifdef NO_ERRORS 6*67e74705SXin Li /* None of these divisions by zero are in live parts of the expression, do not 7*67e74705SXin Li emit any diagnostics. */ 8*67e74705SXin Li 9*67e74705SXin Li #define MACRO_0 0 10*67e74705SXin Li #define MACRO_1 1 11*67e74705SXin Li 12*67e74705SXin Li #if MACRO_0 && 10 / MACRO_0 13*67e74705SXin Li foo 14*67e74705SXin Li #endif 15*67e74705SXin Li 16*67e74705SXin Li #if MACRO_1 || 10 / MACRO_0 17*67e74705SXin Li bar 18*67e74705SXin Li #endif 19*67e74705SXin Li 20*67e74705SXin Li #if 0 ? 124/0 : 42 21*67e74705SXin Li #endif 22*67e74705SXin Li 23*67e74705SXin Li // PR2279 24*67e74705SXin Li #if 0 ? 1/0: 2 25*67e74705SXin Li #else 26*67e74705SXin Li #error 27*67e74705SXin Li #endif 28*67e74705SXin Li 29*67e74705SXin Li // PR2279 30*67e74705SXin Li #if 1 ? 2 ? 3 : 4 : 5 31*67e74705SXin Li #endif 32*67e74705SXin Li 33*67e74705SXin Li // PR2284 34*67e74705SXin Li #if 1 ? 0: 1 ? 1/0: 1/0 35*67e74705SXin Li #endif 36*67e74705SXin Li 37*67e74705SXin Li #else 38*67e74705SXin Li 39*67e74705SXin Li 40*67e74705SXin Li /* The 1/0 is live, it should error out. */ 41*67e74705SXin Li #if 0 && 1 ? 4 : 1 / 0 42*67e74705SXin Li baz 43*67e74705SXin Li #endif 44*67e74705SXin Li 45*67e74705SXin Li 46*67e74705SXin Li #endif 47*67e74705SXin Li 48*67e74705SXin Li // rdar://6505352 49*67e74705SXin Li // -Wundef should not warn about use of undefined identifier if not live. 50*67e74705SXin Li #if (!defined(XXX) || XXX > 42) 51*67e74705SXin Li #endif 52*67e74705SXin Li 53