1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 void f() { 3 int *ptr = malloc(sizeof(int) * 10); // expected-warning{{implicitly declaring library function 'malloc' with type}} \ 4 // expected-note{{please include the header <stdlib.h> or explicitly provide a declaration for 'malloc'}} \ 5 // expected-note{{'malloc' is a builtin with type 'void *}} 6 } 7 8 void *alloca(__SIZE_TYPE__); // redeclaration okay 9 10 int *calloc(__SIZE_TYPE__, __SIZE_TYPE__); // expected-warning{{incompatible redeclaration of library function 'calloc'}} \ 11 // expected-note{{'calloc' is a builtin with type 'void *}} 12 13 14 void g(int malloc) { // okay: these aren't functions 15 int calloc = 1; 16 } 17 18 void h() { 19 int malloc(int); // expected-warning{{incompatible redeclaration of library function 'malloc'}} 20 int strcpy(int); // expected-warning{{incompatible redeclaration of library function 'strcpy'}} \ 21 // expected-note{{'strcpy' is a builtin with type 'char *(char *, const char *)'}} 22 } 23 24 void f2() { 25 fprintf(0, "foo"); // expected-warning{{declaration of built-in function 'fprintf' requires inclusion of the header <stdio.h>}} \ 26 expected-warning {{implicit declaration of function 'fprintf' is invalid in C99}} 27 } 28 29 // PR2892 30 void __builtin_object_size(); // expected-error{{conflicting types}} \ 31 // expected-note{{'__builtin_object_size' is a builtin with type}} 32 33 int a[10]; 34 35 int f0() { 36 return __builtin_object_size(&a); // expected-error {{too few arguments to function}} 37 } 38 39 void * realloc(void *p, int size) { // expected-warning{{incompatible redeclaration of library function 'realloc'}} \ 40 // expected-note{{'realloc' is a builtin with type 'void *(void *,}} 41 return p; 42 } 43 44 // PR3855 45 void snprintf(); // expected-warning{{incompatible redeclaration of library function 'snprintf'}} \ 46 // expected-note{{'snprintf' is a builtin}} 47 48 int 49 main(int argc, char *argv[]) 50 { 51 snprintf(); 52 } 53 54 void snprintf() { } 55 56 // PR8316 57 void longjmp(); // expected-warning{{declaration of built-in function 'longjmp' requires inclusion of the header <setjmp.h>}} 58 59 extern float fmaxf(float, float); 60
