| // RUN: %clang_cc1 -fsyntax-only -verify %s |
| |
| // <rdar://problem/7971948> |
| struct A {}; |
| struct B { |
| void foo(int b) { |
| switch (a) { // expected-error{{use of undeclared identifier 'a'}} |
| default: |
| return; |
| } |
| |
| switch (b) { |
| case 17 // expected-error{{expected ':' after 'case'}} |
| break; |
| |
| default // expected-error{{expected ':' after 'default'}} |
| return; |
| } |
| } |
| |
| void test2() { |
| enum X { Xa, Xb } x; |
| |
| switch (x) { // expected-warning {{enumeration value 'Xb' not handled in switch}} |
| case Xa; // expected-error {{expected ':' after 'case'}} |
| break; |
| } |
| |
| switch (x) { |
| default; // expected-error {{expected ':' after 'default'}} |
| break; |
| } |
| } |
| |
| int test3(int i) { |
| switch (i) { |
| case 1: return 0; |
| 2: return 1; // expected-error {{expected 'case' keyword before expression}} |
| default: return 5; |
| } |
| } |
| }; |
| |
| int test4(int i) { |
| switch (i) |
| 1: return -1; // expected-error {{expected 'case' keyword before expression}} |
| return 0; |
| } |
| |
| int test5(int i) { |
| switch (i) { |
| case 1: case 2: case 3: return 1; |
| { |
| 4:5:6:7: return 2; // expected-error 4{{expected 'case' keyword before expression}} |
| } |
| default: return -1; |
| } |
| } |
| |
| int test6(int i) { |
| switch (i) { |
| case 1: |
| case 4: |
| // This class provides extra single colon tokens. Make sure no |
| // errors are seen here. |
| class foo{ |
| public: |
| protected: |
| private: |
| }; |
| case 2: |
| 5: // expected-error {{expected 'case' keyword before expression}} |
| default: return 1; |
| } |
| } |
| |
| int test7(int i) { |
| switch (i) { |
| case false ? 1 : 2: |
| true ? 1 : 2: // expected-error {{expected 'case' keyword before expression}} |
| case 10: |
| 14 ? 3 : 4; // expected-warning {{expression result unused}} |
| default: |
| return 1; |
| } |
| } |
| |
| enum foo { A, B, C}; |
| int test8( foo x ) { |
| switch (x) { |
| A: return 0; // FIXME: give a warning for unused labels that could also be |
| // a case expression. |
| default: return 1; |
| } |
| } |
| |
| // Stress test to make sure Clang doesn't crash. |
| void test9(int x) { // expected-note {{'x' declared here}} |
| switch(x) { |
| case 1: return; |
| 2: case; // expected-error {{expected 'case' keyword before expression}} \ |
| expected-error {{expected expression}} |
| 4:5:6: return; // expected-error 3{{expected 'case' keyword before expression}} |
| 7: :x; // expected-error {{expected 'case' keyword before expression}} \ |
| expected-error {{expected expression}} |
| 8:: x; // expected-error {{expected ';' after expression}} \ |
| expected-error {{no member named 'x' in the global namespace; did you mean simply 'x'?}} \ |
| expected-warning {{expression result unused}} |
| 9:: :y; // expected-error {{expected ';' after expression}} \ |
| expected-error {{expected unqualified-id}} \ |
| expected-warning {{expression result unused}} |
| :; // expected-error {{expected expression}} |
| ::; // expected-error {{expected unqualified-id}} |
| } |
| } |
| |
| void test10(int x) { |
| switch (x) { |
| case 1: { |
| struct Inner { |
| void g(int y) { |
| 2: y++; // expected-error {{expected ';' after expression}} \ |
| // expected-warning {{expression result unused}} |
| } |
| }; |
| break; |
| } |
| } |
| } |
| |
| template<typename T> |
| struct test11 { |
| enum { E }; |
| |
| void f(int x) { |
| switch (x) { |
| E: break; // FIXME: give a 'case' fix-it for unused labels that |
| // could also be an expression an a case label. |
| E+1: break; // expected-error {{expected 'case' keyword before expression}} |
| } |
| } |
| }; |
| |
| void test12(int x) { |
| switch (x) { |
| 0: // expected-error {{expected 'case' keyword before expression}} |
| while (x) { |
| 1: // expected-error {{expected 'case' keyword before expression}} |
| for (;x;) { |
| 2: // expected-error {{expected 'case' keyword before expression}} |
| if (x > 0) { |
| 3: // expected-error {{expected 'case' keyword before expression}} |
| --x; |
| } |
| } |
| } |
| } |
| } |
| |
| void missing_statement_case(int x) { |
| switch (x) { |
| case 1: |
| case 0: // expected-error {{label at end of compound statement: expected statement}} |
| } |
| } |
| |
| void missing_statement_default(int x) { |
| switch (x) { |
| case 0: |
| default: // expected-error {{label at end of compound statement: expected statement}} |
| } |
| } |
| |
| void pr19022_1() { |
| switch (int x) // expected-error {{variable declaration in condition must have an initializer}} |
| case v: ; // expected-error {{use of undeclared identifier 'v'}} |
| } |
| |
| void pr19022_1a(int x) { |
| switch(x) { |
| case 1 // expected-error{{expected ':' after 'case'}} \ |
| // expected-error{{label at end of compound statement: expected statement}} |
| } |
| } |
| |
| void pr19022_1b(int x) { |
| switch(x) { |
| case v // expected-error{{use of undeclared identifier 'v'}} \ |
| // expected-error{{expected ':' after 'case'}} |
| } // expected-error{{expected statement}} |
| } |
| |
| void pr19022_2() { |
| switch (int x) // expected-error {{variable declaration in condition must have an initializer}} |
| case v1: case v2: ; // expected-error {{use of undeclared identifier 'v1'}} \ |
| // expected-error {{use of undeclared identifier 'v2'}} |
| } |
| |
| void pr19022_3(int x) { |
| switch (x) |
| case 1: case v2: ; // expected-error {{use of undeclared identifier 'v2'}} |
| } |
| |
| int pr19022_4(int x) { |
| switch(x) { |
| case 1 // expected-error{{expected ':' after 'case'}} expected-note{{previous case defined here}} |
| case 1 : return x; // expected-error{{duplicate case value '1'}} |
| } |
| } |
| |
| void pr19022_5(int x) { |
| switch(x) { |
| case 1: case // expected-error{{expected ':' after 'case'}} \ |
| // expected-error{{expected statement}} |
| } // expected-error{{expected expression}} |
| } |
| |
| namespace pr19022 { |
| int baz5() {} |
| bool bar0() { |
| switch (int foo0) //expected-error{{variable declaration in condition must have an initializer}} |
| case bar5: ; // expected-error{{use of undeclared identifier 'bar5'}} |
| } |
| } |
| |
| namespace pr21841 { |
| void fn1() { |
| switch (0) |
| switch (0 // expected-note{{to match this '('}} |
| { // expected-error{{expected ')'}} |
| } |
| } // expected-error{{expected statement}} |
| } |