APIs referenced by global function pointer are not detected

Given a source file funptr.c

#include <stdio.h>
#include <string.h>

// Demonstrate that functions called via a function pointer are detected
// Property: strcmp and puts are present in the output

typedef int (*SW)(const char *);
typedef int (*CW)(const char *, const char *);

CW global_ptr = strcmp;

int main(int argc, const char *argv[]) {
  SW ptr = puts;
  int res = 0;

  ptr("Hello World!");
  res = global_ptr("Hello Universe!", argv[0]);

  return res;
}

Running

# gcc -fplugin=fusa.so -c -o /dev/null -fplugin-arg-fusa-dump-apis=./ funptr.c
cc1: note: [FuSa] Symbol database created at: ./qualify_b848cb94c6a38ea37148c463dd4ba451a54d8c34a857af6abdb6230084e65a06.json

While puts API is detected, strcmp is not detected.

# cat qualify_b848cb94c6a38ea37148c463dd4ba451a54d8c34a857af6abdb6230084e65a06.json 
{
  "symbols":[
    {
      "name":"puts",
      "file":"/usr/include/stdio.h",
      "file-sha256":"2f9b1bd49f5c077435dbcd5c60495b8e26f1f6f16eee9302f02544885c9b2c7a",
      "class_hierarchy":null,
      "namespace_hierarchy":null
    }
  ],
  "version":1
}