[PATCH] Maybe uninitialized var warning workarounds

[Jakub Jelinek <jakub at redhat dot com>]

Hi!

These are workarounds for warnings, though aren't terribly expensive
and aren't in performance critical code.  Neither gcc 4.1 nor 4.3
is able to figure these cases.

2007-07-26  Jakub Jelinek  <jakub@redhat.com>

	* nscd/selinux.c (preserve_capabilities): Initialize new_caps
	to avoid warning.
	* iconv/gconv_open.c (__gconv_open): Initialize ptr to avoid
	warning.
	* nis/nis_subr.c (nis_getnames): Initialize saveptr to avoid
	warning.
	* resolv/inet_ntop.c (inet_ntop6): Initialize best.len and cur.len
	to avoid warnings.

--- libc/nscd/selinux.c.jj	2007-04-23 10:54:02.000000000 +0200
+++ libc/nscd/selinux.c	2007-07-26 13:17:14.000000000 +0200
@@ -180,7 +180,7 @@ preserve_capabilities (void)
     }
 
   cap_t tmp_caps = cap_init ();
-  cap_t new_caps;
+  cap_t new_caps = NULL;
   if (tmp_caps != NULL)
     new_caps = cap_init ();
 
--- libc/iconv/gconv_open.c.jj	2005-12-21 08:27:27.000000000 +0100
+++ libc/iconv/gconv_open.c	2007-07-26 13:17:14.000000000 +0200
@@ -1,5 +1,5 @@
 /* Find matching transformation algorithms and initialize steps.
-   Copyright (C) 1997,1998,1999,2000,2001,2004,2005
+   Copyright (C) 1997,1998,1999,2000,2001,2004,2005,2007
 	Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -56,7 +56,7 @@ __gconv_open (const char *toset, const c
 	  /* Make copy without the error handling description.  */
 	  char *newtoset = (char *) alloca (errhand - toset + 1);
 	  char *tok;
-	  char *ptr;
+	  char *ptr = NULL /* Work around a bogus warning */;
 
 	  newtoset[errhand - toset] = '\0';
 	  toset = memcpy (newtoset, toset, errhand - toset);
--- libc/nis/nis_subr.c.jj	2006-12-11 21:31:22.000000000 +0100
+++ libc/nis/nis_subr.c	2007-07-26 13:41:45.000000000 +0200
@@ -112,7 +112,7 @@ nis_getnames (const_nis_name name)
   size_t name_len = strlen (name);
   char *path;
   int pos = 0;
-  char *saveptr;
+  char *saveptr = NULL;
   int have_point;
   const char *cp;
   const char *cp2;
--- libc/resolv/inet_ntop.c.jj	2007-05-04 11:38:29.000000000 +0200
+++ libc/resolv/inet_ntop.c	2007-07-26 13:17:14.000000000 +0200
@@ -138,6 +138,8 @@ inet_ntop6(src, dst, size)
 		words[i / 2] = (src[i] << 8) | src[i + 1];
 	best.base = -1;
 	cur.base = -1;
+	best.len = 0;
+	cur.len = 0;
 	for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) {
 		if (words[i] == 0) {
 			if (cur.base == -1)

	Jakub