// RUN: %clang_cc1 -std=c++1z -verify %s -Wno-vexing-parse
|
|
int g, h;
|
typedef int T;
|
int f() {
|
// init-statement declarations
|
if (T n = 0; n != 0) {}
|
if (T f(); f()) {}
|
if (T(f()); f()) {}
|
if (T(f()), g, h; f()) {}
|
if (T f(); f()) {}
|
if (T f(), g, h; f()) {}
|
if (T(n) = 0; n) {}
|
|
// init-statement expressions
|
if (T{f()}; f()) {}
|
if (T{f()}, g, h; f()) {} // expected-warning 2{{unused}}
|
if (T(f()), g, h + 1; f()) {} // expected-warning 2{{unused}}
|
|
// condition declarations
|
if (T(n){g}) {}
|
if (T f()) {} // expected-error {{function type}}
|
if (T f(), g, h) {} // expected-error {{function type}}
|
if (T(n) = 0) {}
|
|
// condition expressions
|
if (T(f())) {}
|
if (T{f()}) {}
|
if (T(f()), g, h) {} // expected-warning 2{{unused}}
|
if (T{f()}, g, h) {} // expected-warning 2{{unused}}
|
|
// none of the above, disambiguated as expression (can't be a declaration)
|
if (T(n)(g)) {} // expected-error {{undeclared identifier 'n'}}
|
if (T(n)(int())) {} // expected-error {{undeclared identifier 'n'}}
|
|
// Likewise for 'switch'
|
switch (int n; n) {}
|
switch (g; int g = 5) {}
|
|
if (int a, b; int c = a) { // expected-note 6{{previous}}
|
int a; // expected-error {{redefinition}}
|
int b; // expected-error {{redefinition}}
|
int c; // expected-error {{redefinition}}
|
} else {
|
int a; // expected-error {{redefinition}}
|
int b; // expected-error {{redefinition}}
|
int c; // expected-error {{redefinition}}
|
}
|
|
return 0;
|
}
|
