X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Fisapipe.m4;h=fc6f621bf685baae75f22ed67ab80866b1945060;hb=27ae2d38c9ab3f1acfcccf57ed75611781be0f5e;hp=6bf92218e4621c852e1a6c2849ca7b86697ad07e;hpb=b2e2010c7c902235b5efb5bd3c6529f61b093aa4;p=gnulib.git

diff --git a/m4/isapipe.m4 b/m4/isapipe.m4
index 6bf92218e..fc6f621bf 100644
--- a/m4/isapipe.m4
+++ b/m4/isapipe.m4
@@ -39,8 +39,10 @@ AC_DEFUN([gl_PREREQ_ISAPIPE],
             {
               int fd[2];
               struct stat st;
-              if (pipe (fd) != 0 || fstat (fd[0], &st) != 0)
+              if (pipe (fd) != 0)
                 return 1;
+              if (fstat (fd[0], &st) != 0)
+                return 2;
               if (2 <= argc && argv[1][0] == '-')
                 {
                   char const *yesno = (S_ISFIFO (st.st_mode) ? "yes" : "no");
@@ -48,21 +50,21 @@ AC_DEFUN([gl_PREREQ_ISAPIPE],
                     {
                       long int i = st.st_nlink;
                       if (i != st.st_nlink)
-                        return 1;
+                        return 3;
                       printf ("%s (%ld)\n", yesno, i);
                     }
                   else
                     {
                       unsigned long int i = st.st_nlink;
                       if (i != st.st_nlink)
-                        return 1;
+                        return 4;
                       printf ("%s (%lu)\n", yesno, i);
                     }
                 }
               else
                 {
                   if (! S_ISFIFO (st.st_mode) && ! S_ISSOCK (st.st_mode))
-                    return 1;
+                    return 5;
                 }
               return 0;
             }]])],