1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 // RUN: not %clang_cc1 -fsyntax-only -ast-dump %s | FileCheck %s 3 4 void f() { 5 int *ptr = malloc(sizeof(int) * 10); // expected-warning{{implicitly declaring library function 'malloc' with type}} \ 6 // expected-note{{include the header <stdlib.h> or explicitly provide a declaration for 'malloc'}} \ 7 // expected-note{{'malloc' is a builtin with type 'void *}} 8 } 9 10 void *alloca(__SIZE_TYPE__); // redeclaration okay 11 12 int *calloc(__SIZE_TYPE__, __SIZE_TYPE__); // expected-warning{{incompatible redeclaration of library function 'calloc'}} \ 13 // expected-note{{'calloc' is a builtin with type 'void *}} 14 15 16 void g(int malloc) { // okay: these aren't functions 17 int calloc = 1; 18 } 19 20 void h() { 21 int malloc(int); // expected-warning{{incompatible redeclaration of library function 'malloc'}} 22 int strcpy(int); // expected-warning{{incompatible redeclaration of library function 'strcpy'}} \ 23 // expected-note{{'strcpy' is a builtin with type 'char *(char *, const char *)'}} 24 } 25 26 void f2() { 27 fprintf(0, "foo"); // expected-warning{{declaration of built-in function 'fprintf' requires inclusion of the header <stdio.h>}} \ 28 expected-warning {{implicit declaration of function 'fprintf' is invalid in C99}} 29 } 30 31 // PR2892 32 void __builtin_object_size(); // expected-error{{conflicting types}} \ 33 // expected-note{{'__builtin_object_size' is a builtin with type}} 34 35 int a[10]; 36 37 int f0() { 38 return __builtin_object_size(&a); // expected-error {{too few arguments to function}} 39 } 40 41 void * realloc(void *p, int size) { // expected-warning{{incompatible redeclaration of library function 'realloc'}} \ 42 // expected-note{{'realloc' is a builtin with type 'void *(void *,}} 43 return p; 44 } 45 46 // PR3855 47 void snprintf(); // expected-warning{{incompatible redeclaration of library function 'snprintf'}} \ 48 // expected-note{{'snprintf' is a builtin}} 49 50 int 51 main(int argc, char *argv[]) 52 { 53 snprintf(); 54 } 55 56 void snprintf() { } 57 58 // PR8316 59 void longjmp(); // expected-warning{{declaration of built-in function 'longjmp' requires inclusion of the header <setjmp.h>}} 60 61 extern float fmaxf(float, float); 62 63 struct __jmp_buf_tag {}; 64 void sigsetjmp(struct __jmp_buf_tag[1], int); // expected-warning{{declaration of built-in function 'sigsetjmp' requires inclusion of the header <setjmp.h>}} 65 66 // CHECK: FunctionDecl {{.*}} <line:[[@LINE-2]]:1, col:44> col:6 sigsetjmp ' 67 // CHECK-NOT: FunctionDecl 68 // CHECK: ReturnsTwiceAttr {{.*}} <{{.*}}> Implicit 69
