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