Avoid a segfault for wc --files0=- < /dev/null.

* src/wc.c (compute_number_width): Return right away if nfiles == 0.

2 files changed, 6 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 66673af2d..2efa74a90 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-06-26  Jim Meyering  <jim@meyering.net>
+
+	Avoid a segfault for wc --files0=- < /dev/null.
+	* src/wc.c (compute_number_width): Return right away if nfiles == 0.
+
 2006-06-25  Jim Meyering  <jim@meyering.net>
 
 	* NEWS: wc accepts a new option --files0-from=FILE, where FILE
diff --git a/src/wc.c b/src/wc.c
index 29c624015..1da5373e3 100644
--- a/src/wc.c
+++ b/src/wc.c
@@ -573,7 +573,7 @@ compute_number_width (int nfiles, struct fstatus const *fstatus)
 {
   int width = 1;
 
-  if (fstatus[0].failed <= 0)
+  if (0 < nfiles && fstatus[0].failed <= 0)
     {
       int minimum_width = 1;
       uintmax_t regular_total = 0;