don't do arithmetic on void pointers

Fix one file in gssapi where we compute offsets from a void* without casting.
Change options used with Sun compiler to make such expressions an error.

ticket: 6362

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@21886 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/aclocal.m4 b/src/aclocal.m4
index b1141e86c9a72bf9042d50043cb73ef11e534e79..c494750ad129d45708c9179d26e3ead5a6bb0cdf 100644 (file)
--- a/src/aclocal.m4
+++ b/src/aclocal.m4
@@ -664,7 +664,7 @@ else
     # works, but it also means that declaration-in-code warnings won't
     # be issued.
     # -v -fd -errwarn=E_DECLARATION_IN_CODE ...
-    WARN_CFLAGS="-errtags=yes -errwarn=E_BAD_PTR_INT_COMBINATION"
+    WARN_CFLAGS="-errtags=yes -errwarn=E_BAD_PTR_INT_COMBINATION -errwarn=E_PTR_TO_VOID_IN_ARITHMETIC"
     WARN_CXXFLAGS="-errtags=yes +w +w2 -xport64"
   fi
 fi

diff --git a/src/lib/gssapi/generic/oid_ops.c b/src/lib/gssapi/generic/oid_ops.c
index bd78e262b33c8c28c40c7c061c6bc76a4f4215ed..8390e7ba032c13ed8562158ab3ba7ac9ac4d3b18 100644 (file)
--- a/src/lib/gssapi/generic/oid_ops.c
+++ b/src/lib/gssapi/generic/oid_ops.c
@@ -440,7 +440,7 @@ generic_gss_oid_compose(
        return GSS_S_FAILURE;
     }
 
-    op = oid->elements + prefix_len + nbytes;
+    op = (unsigned char *) oid->elements + prefix_len + nbytes;
     i = -1;
     while (suffix) {
        op[i] = (unsigned char)suffix & 0x7f;
@@ -472,7 +472,7 @@ generic_gss_oid_decompose(
        return GSS_S_BAD_MECH;
     }
 
-    op = oid->elements + prefix_len;
+    op = (unsigned char *) oid->elements + prefix_len;
 
     *suffix = 0;