An inconvenient hang would happen if the stdio _ptr wasn't

found in <stdio.h> and <stdio_impl.h> didn't exist.  (grep
would be grepping stdin for all eternity for the _ptr.)

p4raw-id: //depot/perl@7954

diff --git a/Configure b/Configure
index 5fdc2f1..30300d8 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -20,7 +20,7 @@
 
 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
 #
-# Generated on Fri Dec  1 22:20:01 EET 2000 [metaconfig 3.0 PL70]
+# Generated on Sat Dec  2 18:39:37 EET 2000 [metaconfig 3.0 PL70]
 # (with additional metaconfig patches by perlbug@perl.org)
 
 cat >/tmp/c1$$ <<EOF
@@ -14497,14 +14497,19 @@ if $contains 'unsigned.*char.*_ptr;' `./findhdr stdio.h` >/dev/null 2>&1 ; then
        echo "Your stdio uses unsigned chars." >&4
        stdchar="unsigned char"
 else
-       : Solaris 7+
-       if $contains 'unsigned.*char.*_ptr;' `./findhdr stdio_impl.h` >/dev/null 2>&1 ; then
-               echo "Your stdio uses unsigned chars." >&4
-               stdchar="unsigned char"
-       else
-               echo "Your stdio uses signed chars." >&4
-               stdchar="char"
-       fi
+       : Solaris 7+, others?
+       stdiohdr=`./findhdr stdio_impl.h`
+       case "$stdiohdr" in
+       '') ;;
+       *)      if $contains 'unsigned.*char.*_ptr;' $stdiohdr >/dev/null 2>&1 ; then
+                       echo "Your stdio uses unsigned chars." >&4
+                       stdchar="unsigned char"
+               else
+                       echo "Your stdio uses signed chars." >&4
+                       stdchar="char"
+               fi
+               ;;
+       esac
 fi
 
 : see if time exists