diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/libgen.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/libgen.h b/include/libgen.h index 5edf19e34a66..ef871afbf4b2 100644 --- a/include/libgen.h +++ b/include/libgen.h @@ -39,4 +39,23 @@ char *basename_r(const char *, char *); char *dirname(char *); __END_DECLS +/* + * In FreeBSD 12, the prototype of dirname() was modified to comply to + * POSIX. This function may now modify its input. Unfortunately, our + * copy of xinstall(8) shipped with previous versions of FreeBSD is + * built using the host headers and libc during the bootstrapping phase + * and depends on the old behavior. + * + * Apply a workaround where we explicitly link against dirname@FBSD_1.0 + * in case this function is called on constant strings, instead of + * making the build fail. + */ +#if defined(__generic) && !defined(__cplusplus) +__BEGIN_DECLS +char *__old_dirname(const char *); +__END_DECLS +__sym_compat(dirname, __old_dirname, FBSD_1.0); +#define dirname(x) __generic(x, const char *, __old_dirname, dirname)(x) +#endif + #endif /* !_LIBGEN_H_ */ |