| // RUN: %clang_cc1 -fsyntax-only -verify %s |
| // RUN: not %clang_cc1 -fsyntax-only -ast-dump %s | FileCheck %s |
| |
| void f() { |
| int *ptr = malloc(sizeof(int) * 10); // expected-warning{{implicitly declaring library function 'malloc' with type}} \ |
| // expected-note{{include the header <stdlib.h> or explicitly provide a declaration for 'malloc'}} \ |
| // expected-note{{'malloc' is a builtin with type 'void *}} |
| } |
| |
| void *alloca(__SIZE_TYPE__); // redeclaration okay |
| |
| int *calloc(__SIZE_TYPE__, __SIZE_TYPE__); // expected-warning{{incompatible redeclaration of library function 'calloc'}} \ |
| // expected-note{{'calloc' is a builtin with type 'void *}} |
| |
| |
| void g(int malloc) { // okay: these aren't functions |
| int calloc = 1; |
| } |
| |
| void h() { |
| int malloc(int); // expected-warning{{incompatible redeclaration of library function 'malloc'}} |
| int strcpy(int); // expected-warning{{incompatible redeclaration of library function 'strcpy'}} \ |
| // expected-note{{'strcpy' is a builtin with type 'char *(char *, const char *)'}} |
| } |
| |
| void f2() { |
| fprintf(0, "foo"); // expected-warning{{declaration of built-in function 'fprintf' requires inclusion of the header <stdio.h>}} \ |
| expected-warning {{implicit declaration of function 'fprintf' is invalid in C99}} |
| } |
| |
| // PR2892 |
| void __builtin_object_size(); // expected-error{{conflicting types}} \ |
| // expected-note{{'__builtin_object_size' is a builtin with type}} |
| |
| int a[10]; |
| |
| int f0() { |
| return __builtin_object_size(&a); // expected-error {{too few arguments to function}} |
| } |
| |
| void * realloc(void *p, int size) { // expected-warning{{incompatible redeclaration of library function 'realloc'}} \ |
| // expected-note{{'realloc' is a builtin with type 'void *(void *,}} |
| return p; |
| } |
| |
| // PR3855 |
| void snprintf(); // expected-warning{{incompatible redeclaration of library function 'snprintf'}} \ |
| // expected-note{{'snprintf' is a builtin}} |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| snprintf(); |
| } |
| |
| void snprintf() { } |
| |
| // PR8316 & PR40692 |
| void longjmp(); // expected-warning{{declaration of built-in function 'longjmp' requires the declaration of the 'jmp_buf' type, commonly provided in the header <setjmp.h>.}} |
| |
| extern float fmaxf(float, float); |
| |
| struct __jmp_buf_tag {}; |
| void sigsetjmp(struct __jmp_buf_tag[1], int); // expected-warning{{declaration of built-in function 'sigsetjmp' requires the declaration of the 'jmp_buf' type, commonly provided in the header <setjmp.h>.}} |
| |
| // CHECK: FunctionDecl {{.*}} <line:[[@LINE-2]]:1, col:44> col:6 sigsetjmp ' |
| // CHECK-NOT: FunctionDecl |
| // CHECK: ReturnsTwiceAttr {{.*}} <{{.*}}> Implicit |
| |
| // PR40692 |
| void pthread_create(); // no warning expected |