clang/test/Sema/attr-malloc.c

   1 // RUN: %clang_cc1 -verify -fsyntax-only %s
   2 // RUN: %clang_cc1 -emit-llvm -o %t %s
   3
   4 #include <stddef.h>
   5
   6 // Declare malloc here explicitly so we don't depend on system headers.
   7 void * malloc(size_t) __attribute((malloc));
   8
   9 int no_vars __attribute((malloc)); // expected-warning {{attribute only applies to functions}}
  10
  11 void  returns_void  (void) __attribute((malloc)); // expected-warning {{attribute only applies to return values that are pointers}}
  12 int   returns_int   (void) __attribute((malloc)); // expected-warning {{attribute only applies to return values that are pointers}}
  13 int * returns_intptr(void) __attribute((malloc)); // no-warning
  14 typedef int * iptr;
  15 iptr  returns_iptr  (void) __attribute((malloc)); // no-warning
  16
  17 __attribute((malloc)) void *(*f)(void); //  expected-warning{{attribute only applies to functions}}
  18 __attribute((malloc)) int (*g)(void); // expected-warning{{attribute only applies to functions}}
  19
  20 __attribute((malloc))
  21 void * xalloc(unsigned n) { return malloc(n); } // no-warning
  22 // RUN: grep 'define .*noalias .* @xalloc(' %t %t
  23
  24 #define malloc_like __attribute((__malloc__))
  25 void * xalloc2(unsigned) malloc_like;
  26 void * xalloc2(unsigned n) { return malloc(n); }
  27 // RUN: grep 'define .*noalias .* @xalloc2(' %t %t
  28