69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// RUN: not %clang_cc1 -fsyntax-only -ast-dump %s | FileCheck %s
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void f() {
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int *ptr = malloc(sizeof(int) * 10); // expected-warning{{implicitly declaring library function 'malloc' with type}} \
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// expected-note{{include the header <stdlib.h> or explicitly provide a declaration for 'malloc'}} \
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// expected-note{{'malloc' is a builtin with type 'void *}}
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}
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void *alloca(__SIZE_TYPE__); // redeclaration okay
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int *calloc(__SIZE_TYPE__, __SIZE_TYPE__); // expected-warning{{incompatible redeclaration of library function 'calloc'}} \
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// expected-note{{'calloc' is a builtin with type 'void *}}
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void g(int malloc) { // okay: these aren't functions
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int calloc = 1;
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}
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void h() {
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int malloc(int); // expected-warning{{incompatible redeclaration of library function 'malloc'}}
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int strcpy(int); // expected-warning{{incompatible redeclaration of library function 'strcpy'}} \
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// expected-note{{'strcpy' is a builtin with type 'char *(char *, const char *)'}}
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}
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void f2() {
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fprintf(0, "foo"); // expected-warning{{declaration of built-in function 'fprintf' requires inclusion of the header <stdio.h>}} \
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expected-warning {{implicit declaration of function 'fprintf' is invalid in C99}}
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}
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// PR2892
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void __builtin_object_size(); // expected-error{{conflicting types}} \
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// expected-note{{'__builtin_object_size' is a builtin with type}}
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int a[10];
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int f0() {
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return __builtin_object_size(&a); // expected-error {{too few arguments to function}}
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}
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void * realloc(void *p, int size) { // expected-warning{{incompatible redeclaration of library function 'realloc'}} \
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// expected-note{{'realloc' is a builtin with type 'void *(void *,}}
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return p;
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}
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// PR3855
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void snprintf(); // expected-warning{{incompatible redeclaration of library function 'snprintf'}} \
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// expected-note{{'snprintf' is a builtin}}
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int
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main(int argc, char *argv[])
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{
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snprintf();
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}
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void snprintf() { }
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// PR8316
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void longjmp(); // expected-warning{{declaration of built-in function 'longjmp' requires inclusion of the header <setjmp.h>}}
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extern float fmaxf(float, float);
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struct __jmp_buf_tag {};
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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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// CHECK: FunctionDecl {{.*}} <line:[[@LINE-2]]:1, col:44> col:6 sigsetjmp '
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// CHECK-NOT: FunctionDecl
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// CHECK: ReturnsTwiceAttr {{.*}} <{{.*}}> Implicit
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