llvm-project

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// RUN: %clang_cc1 -fsyntax-only -std=c17 -Wc2x-compat -verify=c17 %s
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// RUN: %clang_cc1 -fsyntax-only -std=c2x -Wpre-c2x-compat -verify=c2x %s
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void test_label_in_func() {
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    int x;
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label1:
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    x = 1;
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label2: label3: label4:
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} // c17-warning {{label at end of compound statement is a C23 extension}} \
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     c2x-warning {{label at end of compound statement is incompatible with C standards before C23}}
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int test_label_in_switch(int v) {
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    switch (v) {
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    case 1:
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        return 1;
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    case 2:
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        return 2;
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    case 3: case 4: case 5:
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    } // c17-warning {{label at end of compound statement is a C23 extension}} \
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         c2x-warning {{label at end of compound statement is incompatible with C standards before C23}}
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    switch (v) {
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    case 6:
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        return 6;
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    default:
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    } // c17-warning {{label at end of compound statement is a C23 extension}} \
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         c2x-warning {{label at end of compound statement is incompatible with C standards before C23}}
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    return 0;
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}
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