| // RUN: clang-cc %s -verify -pedantic -fsyntax-only |
| |
| // PR1966 |
| _Complex double test1() { |
| return __extension__ 1.0if; |
| } |
| |
| _Complex double test2() { |
| return 1.0if; // expected-warning {{imaginary constants are an extension}} |
| } |
| |
| // rdar://6097308 |
| void test3() { |
| int x; |
| (__extension__ x) = 10; |
| } |
| |
| // rdar://6162726 |
| void test4() { |
| static int var; |
| var =+ 5; // expected-warning {{use of unary operator that may be intended as compound assignment (+=)}} |
| var =- 5; // expected-warning {{use of unary operator that may be intended as compound assignment (-=)}} |
| var = +5; // no warning when space between the = and +. |
| var = -5; |
| |
| var =+5; // no warning when the subexpr of the unary op has no space before it. |
| var =-5; |
| |
| #define FIVE 5 |
| var=-FIVE; // no warning with macros. |
| var=-FIVE; |
| } |
| |
| // rdar://6319320 |
| void test5(int *X, float *P) { |
| (float*)X = P; // expected-error {{assignment to cast is illegal, lvalue casts are not supported}} |
| } |
| |
| void test6() { |
| int X; |
| X(); // expected-error {{called object type 'int' is not a function or function pointer}} |
| } |
| |
| void test7(int *P, _Complex float Gamma) { |
| P = (P-42) + Gamma*4; // expected-error {{invalid operands to binary expression ('int *' and '_Complex float')}} |
| } |
| |
| |
| // rdar://6095061 |
| int test8(void) { |
| int i; |
| __builtin_choose_expr (0, 42, i) = 10; // expected-warning {{extension used}} |
| return i; |
| } |
| |
| |
| // PR3386 |
| struct f { int x : 4; float y[]; }; |
| int test9(struct f *P) { |
| int R; |
| R = __alignof(P->x); // expected-error {{invalid application of '__alignof' to bitfield}} expected-warning {{extension used}} |
| R = __alignof(P->y); // ok. expected-warning {{extension used}} |
| R = sizeof(P->x); // expected-error {{invalid application of 'sizeof' to bitfield}} |
| return R; |
| } |
| |
| // PR3562 |
| void test10(int n,...) { |
| struct S { |
| double a[n]; // expected-error {{fields must have a constant size}} |
| } s; |
| double x = s.a[0]; // should not get another error here. |
| } |
| |
| |
| #define MYMAX(A,B) __extension__ ({ __typeof__(A) __a = (A); __typeof__(B) __b = (B); __a < __b ? __b : __a; }) |
| |
| struct mystruct {int A; }; |
| void test11(struct mystruct P, float F) { |
| MYMAX(P, F); // expected-error {{invalid operands to binary expression ('typeof(P)' (aka 'struct mystruct') and 'typeof(F)' (aka 'float'))}} |
| } |
| |
| // PR3753 |
| int test12(const char *X) { |
| return X == "foo"; // expected-warning {{comparison against a string literal is unspecified}} |
| } |
| |