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