diff options
Diffstat (limited to 'clang/test/Sema/fallthrough-attr.c')
| -rw-r--r-- | clang/test/Sema/fallthrough-attr.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/clang/test/Sema/fallthrough-attr.c b/clang/test/Sema/fallthrough-attr.c new file mode 100644 index 00000000000..de50ebf39d4 --- /dev/null +++ b/clang/test/Sema/fallthrough-attr.c @@ -0,0 +1,24 @@ +// RUN: %clang_cc1 -fsyntax-only -std=gnu89 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=gnu99 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=c99 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=c11 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=c2x -DC2X -verify -Wimplicit-fallthrough %s + +int fallthrough_attribute_spelling(int n) { + switch (n) { + case 0: + n++; + case 1: +#if defined(C2X) +// expected-warning@-2{{unannotated fall-through between switch labels}} expected-note@-2{{insert '[[fallthrough]];' to silence this warning}} expected-note@-2{{insert 'break;' to avoid fall-through}} +#else +// expected-warning@-4{{unannotated fall-through between switch labels}} expected-note@-4{{insert '__attribute__((fallthrough));' to silence this warning}} expected-note@-4{{insert 'break;' to avoid fall-through}} +#endif + n++; + __attribute__((fallthrough)); + case 2: + n++; + break; + } + return n; +} |
