+2017-05-14 Bruno Haible <bruno@clisp.org>
+
+ same-inode: Adapt for windows-stat-inodes.
+ * lib/same-inode.h: Include <sys/types.h>.
+ (SAME_INODE) [_GL_WINDOWS_STAT_INODES]: Define specifically.
+ * modules/same-inode (Depends-on): Add sys_types.
+
2017-05-14 Bruno Haible <bruno@clisp.org>
windows-stat-inodes: New module.
#ifndef SAME_INODE_H
# define SAME_INODE_H 1
+# include <sys/types.h>
+
# ifdef __VMS
# define SAME_INODE(a, b) \
((a).st_ino[0] == (b).st_ino[0] \
&& (a).st_ino[2] == (b).st_ino[2] \
&& (a).st_dev == (b).st_dev)
# elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-/* On MinGW, struct stat lacks necessary info, so always return 0.
- Callers can use !a.st_ino to deduce that the information is unknown. */
-# define SAME_INODE(a, b) 0
+ /* Native Windows. */
+# if _GL_WINDOWS_STAT_INODES
+ /* stat() and fstat() set st_dev and st_ino to 0 if information about
+ the inode is not available. */
+# define SAME_INODE(a, b) \
+ (!((a).st_ino == 0 && (a).st_dev == 0) \
+ && (a).st_ino == (b).st_ino && (a).st_dev == (b).st_dev)
+# else
+ /* stat() and fstat() set st_ino to 0 always. */
+# define SAME_INODE(a, b) 0
+# endif
# else
# define SAME_INODE(a, b) \
((a).st_ino == (b).st_ino \