[openssl.org #2465] [PATCH] Silence compiler warnings in RFC 3779 code

[Rob Austein via RT]

Another machine, another version of gcc, another batch of compiler
warnings.  Just gcc worrying about unused return codes and variables
it isn't sure will be initialized before being used.

This patch is against 1.0.0b but should apply cleanly to all supported
branches.



Index: crypto/x509v3/v3_addr.c
--- crypto/x509v3/v3_addr.c.~1~ 2011-03-04 18:09:55.562498000 +0000
+++ crypto/x509v3/v3_addr.c     2011-03-04 18:13:43.000000000 +0000
@@ -595,10 +595,10 @@
     return NULL;
   switch (afi) {
   case IANA_AFI_IPV4:
-    sk_IPAddressOrRange_set_cmp_func(aors, v4IPAddressOrRange_cmp);
+    (void) sk_IPAddressOrRange_set_cmp_func(aors, v4IPAddressOrRange_cmp);
     break;
   case IANA_AFI_IPV6:
-    sk_IPAddressOrRange_set_cmp_func(aors, v6IPAddressOrRange_cmp);
+    (void) sk_IPAddressOrRange_set_cmp_func(aors, v6IPAddressOrRange_cmp);
     break;
   }
   f->ipAddressChoice->type = IPAddressChoice_addressesOrRanges;
@@ -855,7 +855,7 @@
       if (!make_addressRange(&merged, a_min, b_max, length))
        return 0;
       sk_IPAddressOrRange_set(aors, i, merged);
-      sk_IPAddressOrRange_delete(aors, i + 1);
+      (void) sk_IPAddressOrRange_delete(aors, i + 1);
       IPAddressOrRange_free(a);
       IPAddressOrRange_free(b);
       --i;
@@ -879,7 +879,7 @@
                                    v3_addr_get_afi(f)))
       return 0;
   }
-  sk_IPAddressFamily_set_cmp_func(addr, IPAddressFamily_cmp);
+  (void) sk_IPAddressFamily_set_cmp_func(addr, IPAddressFamily_cmp);
   sk_IPAddressFamily_sort(addr);
   OPENSSL_assert(v3_addr_is_canonical(addr));
   return 1;
@@ -1124,7 +1124,7 @@
     return 1;
   if (b == NULL || v3_addr_inherits(a) || v3_addr_inherits(b))
     return 0;
-  sk_IPAddressFamily_set_cmp_func(b, IPAddressFamily_cmp);
+  (void) sk_IPAddressFamily_set_cmp_func(b, IPAddressFamily_cmp);
   for (i = 0; i < sk_IPAddressFamily_num(a); i++) {
     IPAddressFamily *fa = sk_IPAddressFamily_value(a, i);
     int j = sk_IPAddressFamily_find(b, fa);
@@ -1189,7 +1189,7 @@
   }
   if (!v3_addr_is_canonical(ext))
     validation_err(X509_V_ERR_INVALID_EXTENSION);
-  sk_IPAddressFamily_set_cmp_func(ext, IPAddressFamily_cmp);
+  (void) sk_IPAddressFamily_set_cmp_func(ext, IPAddressFamily_cmp);
   if ((child = sk_IPAddressFamily_dup(ext)) == NULL) {
     X509V3err(X509V3_F_V3_ADDR_VALIDATE_PATH_INTERNAL, ERR_R_MALLOC_FAILURE);
     ret = 0;
@@ -1215,7 +1215,7 @@
       }
       continue;
     }
-    sk_IPAddressFamily_set_cmp_func(x->rfc3779_addr, IPAddressFamily_cmp);
+    (void) sk_IPAddressFamily_set_cmp_func(x->rfc3779_addr, 
IPAddressFamily_cmp);
     for (j = 0; j < sk_IPAddressFamily_num(child); j++) {
       IPAddressFamily *fc = sk_IPAddressFamily_value(child, j);
       int k = sk_IPAddressFamily_find(x->rfc3779_addr, fc);
Index: crypto/x509v3/v3_asid.c
--- crypto/x509v3/v3_asid.c.~1~ 2011-03-04 18:09:55.562498000 +0000
+++ crypto/x509v3/v3_asid.c     2011-03-04 18:13:52.000000000 +0000
@@ -327,7 +327,7 @@
   for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges) - 1; i++) {
     ASIdOrRange *a = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);
     ASIdOrRange *b = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i + 1);
-    ASN1_INTEGER *a_min, *a_max, *b_min, *b_max;
+    ASN1_INTEGER *a_min = NULL, *a_max = NULL, *b_min = NULL, *b_max = NULL;
 
     extract_min_max(a, &a_min, &a_max);
     extract_min_max(b, &b_min, &b_max);
@@ -405,7 +405,7 @@
   for (i = 0; i < sk_ASIdOrRange_num(choice->u.asIdsOrRanges) - 1; i++) {
     ASIdOrRange *a = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i);
     ASIdOrRange *b = sk_ASIdOrRange_value(choice->u.asIdsOrRanges, i + 1);
-    ASN1_INTEGER *a_min, *a_max, *b_min, *b_max;
+    ASN1_INTEGER *a_min = NULL, *a_max = NULL, *b_min = NULL, *b_max = NULL;
 
     extract_min_max(a, &a_min, &a_max);
     extract_min_max(b, &b_min, &b_max);
@@ -466,7 +466,7 @@
        break;
       }
       ASIdOrRange_free(b);
-      sk_ASIdOrRange_delete(choice->u.asIdsOrRanges, i + 1);
+      (void) sk_ASIdOrRange_delete(choice->u.asIdsOrRanges, i + 1);
       i--;
       continue;
     }
@@ -639,7 +639,7 @@
  */
 static int asid_contains(ASIdOrRanges *parent, ASIdOrRanges *child)
 {
-  ASN1_INTEGER *p_min, *p_max, *c_min, *c_max;
+  ASN1_INTEGER *p_min = NULL, *p_max = NULL, *c_min = NULL, *c_max = NULL;
   int p, c;
 
   if (child == NULL || parent == child)