diff options
| -rw-r--r-- | lib/canonicalize.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/lib/canonicalize.c b/lib/canonicalize.c index cfd3be60e..fd6de0559 100644 --- a/lib/canonicalize.c +++ b/lib/canonicalize.c @@ -38,9 +38,7 @@ void free (); #include <sys/stat.h> -#if HAVE_ERRNO_H -# include <errno.h> -#endif +#include <errno.h> #include "xalloc.h" #include "xgetcwd.h" @@ -55,11 +53,21 @@ extern int errno; #if !HAVE_RESOLVEPATH -# if HAVE_STDDEF_H -# include <stddef.h> -# define PTR_INT_TYPE ptrdiff_t +/* If __PTRDIFF_TYPE__ is + defined, as with GNU C, use that; that way we don't pollute the + namespace with <stddef.h>'s symbols. Otherwise, if <stddef.h> is + available, include it and use ptrdiff_t. In traditional C, long is + the best that we can do. */ + +# ifdef __PTRDIFF_TYPE__ +# define PTR_INT_TYPE __PTRDIFF_TYPE__ # else -# define PTR_INT_TYPE long +# ifdef HAVE_STDDEF_H +# include <stddef.h> +# define PTR_INT_TYPE ptrdiff_t +# else +# define PTR_INT_TYPE long +# endif # endif # include "pathmax.h" |