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/ecvt.c b/src/lib/libc/stdlib/ecvt.c
index 719370a8f3..03ff918967 100644
--- a/src/lib/libc/stdlib/ecvt.c
+++ b/src/lib/libc/stdlib/ecvt.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ecvt.c,v 1.6 2006/10/29 18:45:56 deraadt Exp $        */
+/*      $OpenBSD: ecvt.c,v 1.7 2009/10/16 12:15:03 martynas Exp $       */
 
 /*
  * Copyright (c) 2002, 2006 Todd C. Miller <Todd.Miller@courtesan.com>
@@ -62,6 +62,8 @@ __cvt(double value, int ndigit, int *decpt, int *sign, int fmode, int pad)
                 *rve = '\0';
         } else {
                 p = __dtoa(value, fmode + 2, ndigit, decpt, sign, &rve);
+                if (p == NULL)
+                        return (NULL);
                 if (*decpt == 9999) {
                         /* Infinity or Nan, convert to inf or nan like printf */
                         *decpt = 0;