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