diff options
| author | Marek Polacek <polacek@redhat.com> | 2016-09-26 09:42:50 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2016-09-26 09:42:50 +0000 |
| commit | 81fea426da8c4687bb32e6894dc26f00ae211822 (patch) | |
| tree | 8b84b3de175727d09b7dcf1b5703e0d46b64f9e7 /gcc/testsuite/obj-c++.dg | |
| parent | 392fa55c799358e198ca85fbea548e60359133c5 (diff) | |
Implement -Wimplicit-fallthrough.
Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r240485
Diffstat (limited to 'gcc/testsuite/obj-c++.dg')
| -rw-r--r-- | gcc/testsuite/obj-c++.dg/Wimplicit-fallthrough-1.mm | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/obj-c++.dg/Wimplicit-fallthrough-1.mm b/gcc/testsuite/obj-c++.dg/Wimplicit-fallthrough-1.mm new file mode 100644 index 00000000000..b45880f19b4 --- /dev/null +++ b/gcc/testsuite/obj-c++.dg/Wimplicit-fallthrough-1.mm @@ -0,0 +1,38 @@ +/* PR c/7652 */ +/* { dg-do compile } */ +/* { dg-options "-Wimplicit-fallthrough" } */ +/* Test taken from + <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0188r0.pdf>. */ + +extern void f (int); + +void +foo (int n) +{ + switch (n) + { + case 22: + case 33: + f (1); /* { dg-warning "statement may fall through" } */ + case 44: + f (2); + __attribute__((fallthrough)); + case 55: + if (n > 10) + { + f (3); + break; + } + else + { + f (4); + __attribute__((fallthrough)); + } + case 66: + f (5); + __attribute__((fallthrough)); /* { dg-warning "not preceding" } */ + f (6); /* { dg-warning "statement may fall through" } */ + case 77: + f (7); + } +} |