teach gdtoa & its subroutines that malloc can fail; in which case

ecvt, fcvt, gcvt, *printf, strtof, strtod, strtold act per ieee
1003.1.  after these massive changes, remove unused files which
would not work now.  reported by Maksymilian Arciemowicz;  ok theo

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lib/libc/stdlib/gcvt.c b/src/lib/libc/stdlib/gcvt.c
index c24157e465..e5488d912d 100644
--- a/src/lib/libc/stdlib/gcvt.c
+++ b/src/lib/libc/stdlib/gcvt.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: gcvt.c,v 1.10 2006/10/29 18:45:56 deraadt Exp $       */
+/*      $OpenBSD: gcvt.c,v 1.11 2009/10/16 12:15:03 martynas Exp $      */
 
 /*
  * Copyright (c) 2002, 2003, 2006 Todd C. Miller <Todd.Miller@courtesan.com>
@@ -42,6 +42,8 @@ gcvt(double value, int ndigit, char *buf)
         }
 
         digits = __dtoa(value, 2, ndigit, &decpt, &sign, NULL);
+        if (digits == NULL)
+                return (NULL);
         if (decpt == 9999) {
                 /*
                  * Infinity or NaN, convert to inf or nan with sign.