This file is indexed.

/usr/share/systemtap/runtime/linux/autoconf-utrace-regset.c is in systemtap-common 2.3-1ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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#include <linux/tracehook.h>

/* old rhel5 utrace regset */
int foobar(int n) { 
  const struct utrace_regset_view *rsv = utrace_native_view(current);  
  const struct utrace_regset *rs = & rsv->regsets[0];
  return rsv->n + n + (rs->get)(current, rs, 0, 0, NULL, NULL);
}