| // 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; |
| } |
