binutils/binutils-gas-input-matches-...

38 lines
1.4 KiB
Diff

--- binutils.orig/gas/as.c 2019-01-30 11:02:04.055574300 +0000
+++ binutils-2.31.1/gas/as.c 2019-01-30 11:03:12.212050935 +0000
@@ -1254,14 +1254,27 @@ main (int argc, char ** argv)
{
struct stat sib;
- if (stat (argv[i], &sib) == 0)
+ /* Check that the input file and output file are different. */
+ if (stat (argv[i], &sib) == 0
+ && sib.st_ino == sob.st_ino
+ /* POSIX emulating systems may support stat() but if the
+ underlying file system does not support a file serial number
+ of some kind then they will return 0 for the inode. So
+ two files with an inode of 0 may not actually be the same.
+ On real POSIX systems no ordinary file will ever have an
+ inode of 0. */
+ && sib.st_ino != 0
+ /* Different files may have the same inode number if they
+ reside on different devices, so check the st_dev field as
+ well. */
+ && sib.st_dev == sob.st_dev)
{
- if (sib.st_ino == sob.st_ino && sib.st_ino != 0)
- {
- /* Don't let as_fatal remove the output file! */
- out_file_name = NULL;
- as_fatal (_("The input and output files must be distinct"));
- }
+ const char *saved_out_file_name = out_file_name;
+
+ /* Don't let as_fatal remove the output file! */
+ out_file_name = NULL;
+ as_fatal (_("The input '%s' and output '%s' files are the same"),
+ argv[i], saved_out_file_name);
}
}
}