1 #include <stdint.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 
5 int __llvm_profile_runtime = 0;
6 uint64_t __llvm_profile_get_size_for_buffer(void);
7 int __llvm_profile_write_buffer(char *);
8 void __llvm_profile_reset_counters(void);
9 int __llvm_profile_check_compatibility(const char *, uint64_t);
10 
11 int gg = 0;
bar(char c)12 void bar(char c) {
13   if (c == '1')
14     gg++;
15   else
16     gg--;
17 }
18 
19 /* Returns 0 (size) when an error occurs. */
libEntry(char * Buffer,uint64_t MaxSize)20 uint64_t libEntry(char *Buffer, uint64_t MaxSize) {
21 
22   uint64_t Size = __llvm_profile_get_size_for_buffer();
23   if (Size > MaxSize)
24     return 0;
25 
26   __llvm_profile_reset_counters();
27 
28   bar('1');
29 
30   if (__llvm_profile_write_buffer(Buffer))
31     return 0;
32 
33   /* Now check compatibility. Should return 0.  */
34   if (__llvm_profile_check_compatibility(Buffer, Size))
35     return 0;
36 
37   return Size;
38 }
39 
40