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

[jakub at gcc dot gnu.org]

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

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(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.