[bug-cflow] reduced test case for attribute parsing problem

[Britton Kerin]

Below is a simple-as-possible test case which shows one of the
attribute parsing bugs I reported the other day.  I'll try to make a
test case for the other later.

If you don't want to work on these right now I could perhaps fix them,
though I'm sure you could do it faster.  Thanks


$ cat test.c

#include <stddef.h>

__attribute__((__malloc__))
__attribute__((__alloc_size__(1)))
void* test_malloc        (size_t bytes);

__attribute__((__malloc__))
__attribute__((__alloc_size__(1)))
void* test_malloc0       (size_t bytes);

// Dummy implementations
void *test_malloc (size_t bytes) { bytes = bytes; return NULL; }
void *test_malloc0 (size_t bytes) { bytes = bytes; return NULL; }

int
main (void)
{
  test_malloc (42);
  test_malloc0 (42);

  return 0;
}
$ gcc -Wall -Wextra -Werror test.c
$ cflow --symbol __attribute__:wrapper test.c
cflow:test.c:9: __alloc_size__/0 redefined
cflow:test.c:5: this is the place of previous definition
main() <int main (void) at test.c:17>:
    test_malloc() <void *test_malloc (size_t bytes) at test.c:13>:
    test_malloc0() <void *test_malloc0 (size_t bytes) at test.c:14>:
$