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// 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
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