attr-malloc.c revision 917a5538f40618cf7a626cb2d3c9e96557bf1b1e 
1// RUN: clang -Xclang -verify -fsyntax-only %s
2// RUN: clang -emit-llvm -S -o %t %s
3
4#include <stdlib.h>
5
6int no_vars __attribute((malloc)); // expected-warning {{functions returning a pointer type}}
7
8void  returns_void  (void) __attribute((malloc)); // expected-warning {{functions returning a pointer type}}
9int   returns_int   (void) __attribute((malloc)); // expected-warning {{functions returning a pointer type}}
10int * returns_intptr(void) __attribute((malloc)); // no-warning
11typedef int * iptr;
12iptr  returns_iptr  (void) __attribute((malloc)); // no-warning
13
14__attribute((malloc)) void *(*f)(); //  expected-warning{{'malloc' attribute only applies to functions returning a pointer type}}
15__attribute((malloc)) int (*g)(); // expected-warning{{'malloc' attribute only applies to functions returning a pointer type}}
16
17__attribute((malloc))
18void * xalloc(unsigned n) { return malloc(n); } // no-warning
19// RUN: grep 'define noalias .* @xalloc(' %t
20
21#define malloc_like __attribute((__malloc__))
22void * xalloc2(unsigned) malloc_like;
23void * xalloc2(unsigned n) { return malloc(n); }
24// RUN: grep 'define noalias .* @xalloc2(' %t
25
26