forked from OSchip/llvm-project
97 lines
2.0 KiB
C++
97 lines
2.0 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -Wextra-semi-stmt -verify %s
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// RUN: cp %s %t
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// RUN: %clang_cc1 -x c++ -Wextra-semi-stmt -fixit %t
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// RUN: %clang_cc1 -x c++ -Wextra-semi-stmt -Werror %t
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#define GOODMACRO(varname) int varname
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#define BETTERMACRO(varname) GOODMACRO(varname);
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#define NULLMACRO(varname)
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enum MyEnum {
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E1,
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E2
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};
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void test() {
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; // expected-warning {{empty expression statement has no effect; remove unnecessary ';' to silence this warning}}
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;
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// This removal of extra semi also consumes all the comments.
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// clang-format off
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;;;
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// clang-format on
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// clang-format off
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;NULLMACRO(ZZ);
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// clang-format on
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{}; // expected-warning {{empty expression statement has no effect; remove unnecessary ';' to silence this warning}}
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{
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; // expected-warning {{empty expression statement has no effect; remove unnecessary ';' to silence this warning}}
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}
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if (true) {
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; // expected-warning {{empty expression statement has no effect; remove unnecessary ';' to silence this warning}}
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}
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GOODMACRO(v0); // OK
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GOODMACRO(v1;) // OK
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BETTERMACRO(v2) // OK
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BETTERMACRO(v3;) // Extra ';', but within macro expansion, so ignored.
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BETTERMACRO(v4); // expected-warning {{empty expression statement has no effect; remove unnecessary ';' to silence this warning}}
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BETTERMACRO(v5;); // expected-warning {{empty expression statement has no effect; remove unnecessary ';' to silence this warning}}
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NULLMACRO(v6) // OK
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NULLMACRO(v7); // OK. This could be either GOODMACRO() or BETTERMACRO() situation, so we can't know we can drop it.
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if (true)
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; // OK
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while (true)
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; // OK
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do
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; // OK
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while (true);
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for (;;) // OK
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; // OK
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MyEnum my_enum;
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switch (my_enum) {
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case E1:
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// stuff
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break;
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case E2:; // OK
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}
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for (;;) {
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for (;;) {
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goto contin_outer;
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}
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contin_outer:; // OK
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}
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}
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;
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namespace NS {};
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void foo(int x) {
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switch (x) {
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case 0:
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[[fallthrough]];
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case 1:
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return;
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}
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}
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[[]];
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