new warnings building cp-demangle.c

[Ben Elliston]

Hi Ian

In the last couple of days, I have started seeing the following warnings
when building target-libiberty:

/home/bje/source/gcc-clean/libiberty/cp-demangle.c:723: warning: logical ‘and’ 
of mutually exclusive tests is always false
/home/bje/source/gcc-clean/libiberty/cp-demangle.c:742: warning: logical ‘and’ 
of mutually exclusive tests is always false

The code around line 723 is:

  if (p == NULL
      || name == NULL
      || (kind < gnu_v3_complete_object_ctor
          && kind > gnu_v3_complete_object_allocating_ctor))
    return 0;

(and similarly for line 742).  A bug?

Cheers, Ben