[Bug bootstrap/78859] profiledbootstrap failure caused by -Werror=nonnull

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78859

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> (In reply to Martin Liška from comment #0)
> > There are 2 (so far) errors reported:
> > 
> > 1) gengtype.c:
> > 
> > ../../gcc/gengtype.c: In function ‘const char*
> > get_file_srcdir_relative_path(const input_file*)’:
> > ../../gcc/gengtype.c:1760:14: error: argument 1 null where non-null expected
> > [-Werror=nonnull]
> >    if (strlen (f) > srcdir_len
> >        ~~~~~~~^~~
> > 
> > This is real bug, following patch fixes that:
> 
> Only iff get_file_srcdir_relative_path is ever called with NULL inpf.  If
> not, it is a false positive.  As strlen would crash if it is called with
> NULL and it has not been reported yet, it clearly is not.

So with the following patch (and -disable-werror) the profiledbootstrap
finishes:

@@ -75,9 +75,8 @@ const char *get_file_srcdir_relative_path (const input_file
*inpf);
 static inline const char*
 get_input_file_name (const input_file *inpf)
 {
-  if (inpf)
-      return inpf->inpname;
-  return NULL;
+  gcc_assert (inpf);
+  return inpf->inpname;
 }

Thus, it's regression.