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| // RUN: %clang_cc1 %s -std=c++11 -fsyntax-only -Wmicrosoft -verify -fms-extensions
class MayExist {
private:
typedef int Type;
};
void test_if_exists_stmts() {
int b = 0;
__if_exists(MayExist::Type) {
b++;
b++;
}
__if_exists(MayExist::Type_not) {
this will not compile.
}
__if_not_exists(MayExist::Type) {
this will not compile.
}
__if_not_exists(MayExist::Type_not) {
b++;
b++;
}
}
int if_exists_creates_no_scope() {
__if_exists(MayExist::Type) {
int x; // 'x' is declared in the parent scope.
}
__if_not_exists(MayExist::Type_not) {
x++;
}
return x;
}
__if_exists(MayExist::Type) {
int var23;
}
__if_exists(MayExist::Type_not) {
this will not compile.
}
__if_not_exists(MayExist::Type) {
this will not compile.
}
__if_not_exists(MayExist::Type_not) {
int var244;
}
void test_if_exists_init_list() {
int array1[] = {
0,
__if_exists(MayExist::Type) {2, }
3
};
int array2[] = {
0,
__if_exists(MayExist::Type_not) { this will not compile }
3
};
int array3[] = {
0,
__if_not_exists(MayExist::Type_not) {2, }
3
};
int array4[] = {
0,
__if_not_exists(MayExist::Type) { this will not compile }
3
};
}
class IfExistsClassScope {
__if_exists(MayExist::Type) {
// __if_exists, __if_not_exists can nest
__if_not_exists(MayExist::Type_not) {
int var123;
}
int var23;
}
__if_exists(MayExist::Type_not) {
this will not compile.
}
__if_not_exists(MayExist::Type) {
this will not compile.
}
__if_not_exists(MayExist::Type_not) {
int var244;
}
};
void test_nested_if_exists() {
__if_exists(MayExist::Type) {
int x = 42;
__if_not_exists(MayExist::Type_not) {
x++;
}
}
}
void test_attribute_on_if_exists() {
[[clang::fallthrough]] // expected-error {{an attribute list cannot appear here}}
__if_exists(MayExist::Type) {
int x;
}
}
|