How to do an explicit fall-through in C

Question

The newer versions of gcc offer the Wimplicit-fallthrough, which is great to have for most switch statements. However, I have one switch statement where I want to allow fall throughs from all case-statements.

Is there a way to do an explicit fall through? I'd prefer to avoid having to compile with Wno-implicit-fallthrough for this file.

EDIT: I'm looking for a way to make the fall through explicit (if it's possible), not to turn off the warning via a compiler switch or pragma.

Answer 1

Use __attribute__ ((fallthrough))

switch (condition) {     case 1:         printf("1 ");         __attribute__ ((fallthrough));     case 2:         printf("2 ");         __attribute__ ((fallthrough));     case 3:         printf("3\n");         break; }