Silence most -Wzero-as-null-pointer-constant diagnostics

Replace 0 by NULL and {0} by {}.

Omit a few cases that aren't so trivial to fix.

Link: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117059>
Link: <https://software.codidact.com/posts/292718/292759#answer-292759>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

8 files changed, 17 insertions, 17 deletions

diff --git a/sunrpc/clnt_raw.c b/sunrpc/clnt_raw.c
index 5b9bd48247..79c0964e7b 100644
--- a/sunrpc/clnt_raw.c
+++ b/sunrpc/clnt_raw.c
@@ -90,11 +90,11 @@ clntraw_create (u_long prog, u_long vers)
   XDR *xdrs;
   CLIENT *client;
 
-  if (clp == 0)
+  if (clp == NULL)
     {
       clp = (struct clntraw_private_s *) calloc (1, sizeof (*clp));
-      if (clp == 0)
-	return (0);
+      if (clp == NULL)
+	return NULL;
       clntraw_private = clp;
     }
   xdrs = &clp->xdr_stream;
diff --git a/sunrpc/clnt_simp.c b/sunrpc/clnt_simp.c
index fab61d2170..ee77af9cbc 100644
--- a/sunrpc/clnt_simp.c
+++ b/sunrpc/clnt_simp.c
@@ -60,10 +60,10 @@ callrpc (const char *host, u_long prognum, u_long versnum, u_long procnum,
   enum clnt_stat clnt_stat;
   struct timeval timeout, tottimeout;
 
-  if (crp == 0)
+  if (crp == NULL)
     {
       crp = (struct callrpc_private_s *) calloc (1, sizeof (*crp));
-      if (crp == 0)
+      if (crp == NULL)
 	return 0;
       callrpc_private = crp;
     }
diff --git a/sunrpc/key_call.c b/sunrpc/key_call.c
index b0b29e09a7..c8e414b1df 100644
--- a/sunrpc/key_call.c
+++ b/sunrpc/key_call.c
@@ -542,7 +542,7 @@ key_call (u_long proc, xdrproc_t xdr_arg, char *arg,
   else if (proc == KEY_GEN && __key_gendes_LOCAL)
     {
       des_block *res;
-      res = (*__key_gendes_LOCAL) (__geteuid (), 0);
+      res = (*__key_gendes_LOCAL) (__geteuid (), NULL);
       *(des_block *) rslt = *res;
       return 1;
     }
diff --git a/sunrpc/svc_raw.c b/sunrpc/svc_raw.c
index f0176311d5..2879ce6f84 100644
--- a/sunrpc/svc_raw.c
+++ b/sunrpc/svc_raw.c
@@ -72,10 +72,10 @@ svcraw_create (void)
 {
   struct svcraw_private_s *srp = svcraw_private;
 
-  if (srp == 0)
+  if (srp == NULL)
     {
       srp = (struct svcraw_private_s *) calloc (1, sizeof (*srp));
-      if (srp == 0)
+      if (srp == NULL)
 	return NULL;
     }
   srp->server.xp_sock = 0;
@@ -99,7 +99,7 @@ svcraw_recv (SVCXPRT *xprt, struct rpc_msg *msg)
   struct svcraw_private_s *srp = svcraw_private;
   XDR *xdrs;
 
-  if (srp == 0)
+  if (srp == NULL)
     return FALSE;
   xdrs = &srp->xdr_stream;
   xdrs->x_op = XDR_DECODE;
@@ -115,7 +115,7 @@ svcraw_reply (SVCXPRT *xprt, struct rpc_msg *msg)
   struct svcraw_private_s *srp = svcraw_private;
   XDR *xdrs;
 
-  if (srp == 0)
+  if (srp == NULL)
     return FALSE;
   xdrs = &srp->xdr_stream;
   xdrs->x_op = XDR_ENCODE;
@@ -131,7 +131,7 @@ svcraw_getargs (SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr)
 {
   struct svcraw_private_s *srp = svcraw_private;
 
-  if (srp == 0)
+  if (srp == NULL)
     return FALSE;
   return (*xdr_args) (&srp->xdr_stream, args_ptr);
 }
@@ -142,7 +142,7 @@ svcraw_freeargs (SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr)
   struct svcraw_private_s *srp = svcraw_private;
   XDR *xdrs;
 
-  if (srp == 0)
+  if (srp == NULL)
     return FALSE;
   xdrs = &srp->xdr_stream;
   xdrs->x_op = XDR_FREE;
diff --git a/sunrpc/svc_simple.c b/sunrpc/svc_simple.c
index 2f2595c0ff..5a6dd1fce6 100644
--- a/sunrpc/svc_simple.c
+++ b/sunrpc/svc_simple.c
@@ -74,7 +74,7 @@ __registerrpc (u_long prognum, u_long versnum, u_long procnum,
 	buf = NULL;
       goto err_out;
     }
-  if (transp == 0)
+  if (transp == NULL)
     {
       transp = svcudp_create (RPC_ANYSOCK);
       if (transp == NULL)
diff --git a/sunrpc/xdr_mem.c b/sunrpc/xdr_mem.c
index 46a1f6f190..a5aa93f437 100644
--- a/sunrpc/xdr_mem.c
+++ b/sunrpc/xdr_mem.c
@@ -195,7 +195,7 @@ xdrmem_setpos (XDR *xdrs, u_int pos)
 static int32_t *
 xdrmem_inline (XDR *xdrs, u_int len)
 {
-  int32_t *buf = 0;
+  int32_t *buf = NULL;
 
   if (xdrs->x_handy >= len)
     {
diff --git a/sunrpc/xdr_sizeof.c b/sunrpc/xdr_sizeof.c
index 1592406d64..03c23cd42b 100644
--- a/sunrpc/xdr_sizeof.c
+++ b/sunrpc/xdr_sizeof.c
@@ -89,7 +89,7 @@ x_inline (XDR *xdrs, u_int len)
       free (xdrs->x_private);
       if ((xdrs->x_private = (caddr_t) malloc (len)) == NULL)
 	{
-	  xdrs->x_base = 0;
+	  xdrs->x_base = NULL;
 	  return NULL;
 	}
       xdrs->x_base = (void *) (long) len;
@@ -109,7 +109,7 @@ static void
 x_destroy (XDR *xdrs)
 {
   xdrs->x_handy = 0;
-  xdrs->x_base = 0;
+  xdrs->x_base = NULL;
   if (xdrs->x_private)
     {
       free (xdrs->x_private);
diff --git a/sunrpc/xdr_stdio.c b/sunrpc/xdr_stdio.c
index 0c2cbb78de..204ed599ae 100644
--- a/sunrpc/xdr_stdio.c
+++ b/sunrpc/xdr_stdio.c
@@ -89,7 +89,7 @@ xdrstdio_create (XDR *xdrs, FILE *file, enum xdr_op op)
   xdrs->x_ops = (struct xdr_ops *) &xdrstdio_ops;
   xdrs->x_private = (caddr_t) file;
   xdrs->x_handy = 0;
-  xdrs->x_base = 0;
+  xdrs->x_base = NULL;
 }
 
 /*