1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wimplicit-fallthrough-per-function %s 2 3 4 int fallthrough(int n) { 5 switch (n / 10) { 6 case 0: 7 n += 100; 8 case 1: // expected-warning{{unannotated fall-through}} expected-note{{insert '[[clang::fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}} 9 switch (n) { 10 case 111: 11 n += 111; 12 [[clang::fallthrough]]; 13 case 112: 14 n += 112; 15 case 113: // expected-warning{{unannotated fall-through}} expected-note{{insert '[[clang::fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}} 16 n += 113; 17 break ; 18 } 19 } 20 return n; 21 } 22 23 int fallthrough2(int n) { 24 switch (n / 10) { 25 case 0: 26 n += 100; 27 case 1: // no warning, as we didn't "opt-in" for it in this method 28 switch (n) { 29 case 111: 30 n += 111; 31 case 112: // no warning, as we didn't "opt-in" for it in this method 32 n += 112; 33 case 113: // no warning, as we didn't "opt-in" for it in this method 34 n += 113; 35 break ; 36 } 37 } 38 return n; 39 } 40 41 void unscoped(int n) { 42 switch (n % 2) { 43 case 0: 44 // FIXME: This should be typo-corrected, probably. 45 [[fallthrough]]; // expected-warning{{unknown attribute 'fallthrough' ignored}} 46 case 2: // expected-warning{{unannotated fall-through}} expected-note{{clang::fallthrough}} expected-note{{break;}} 47 [[clang::fallthrough]]; 48 case 1: 49 break; 50 } 51 } 52
