forked from OSchip/llvm-project
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wimplicit-fallthrough-per-function %s
|
|
|
|
|
|
int fallthrough(int n) {
|
|
switch (n / 10) {
|
|
case 0:
|
|
n += 100;
|
|
case 1: // expected-warning{{unannotated fall-through}} expected-note{{insert '[[clang::fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
switch (n) {
|
|
case 111:
|
|
n += 111;
|
|
[[clang::fallthrough]];
|
|
case 112:
|
|
n += 112;
|
|
case 113: // expected-warning{{unannotated fall-through}} expected-note{{insert '[[clang::fallthrough]];' to silence this warning}} expected-note{{insert 'break;' to avoid fall-through}}
|
|
n += 113;
|
|
break ;
|
|
}
|
|
}
|
|
return n;
|
|
}
|
|
|
|
int fallthrough2(int n) {
|
|
switch (n / 10) {
|
|
case 0:
|
|
n += 100;
|
|
case 1: // no warning, as we didn't "opt-in" for it in this method
|
|
switch (n) {
|
|
case 111:
|
|
n += 111;
|
|
case 112: // no warning, as we didn't "opt-in" for it in this method
|
|
n += 112;
|
|
case 113: // no warning, as we didn't "opt-in" for it in this method
|
|
n += 113;
|
|
break ;
|
|
}
|
|
}
|
|
return n;
|
|
}
|
|
|
|
void unscoped(int n) {
|
|
switch (n % 2) {
|
|
case 0:
|
|
// FIXME: This should be typo-corrected, probably.
|
|
[[fallthrough]]; // expected-warning{{unknown attribute 'fallthrough' ignored}}
|
|
case 2: // expected-warning{{unannotated fall-through}} expected-note{{clang::fallthrough}} expected-note{{break;}}
|
|
[[clang::fallthrough]];
|
|
case 1:
|
|
break;
|
|
}
|
|
}
|