This is valid "C":

void foo(void)
{
  printf("Hello world!\n");
}

void bar(void)
{
   foo;
}

If a function name is used without an argument list, "C" treats it as the
'address' of the function. For example, this is valid:

typedef void (*baz)(void);

baz function_ptr =3D foo;

Where we declare a type (baz) to be a pointer to a function that takes no
arguments and returns nothing. We then assign the address of foo to a
pointer of that newly declared type.

So, given that this is valid, the only warning that would make sense would
be something like:


Function 'bar', line ??: Expression has no side effects and its value is no=
t
used

I would look for a warning about 'unused' something or other.

-- Bob Ammerman
RAm Systems

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