switch-implicit-fallthrough-per-method.cpp source code [clang_source_code/test/SemaCXX/switch-implicit-fallthrough-per-method.cpp]

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	[[fallthrough]];
45	case 2:
46	[[clang::fallthrough]];
47	case 1:
48	break;
49	}
50	}
51

Clang Project