From e9792090c892be910c634803b2a3839e061cf4e4 Mon Sep 17 00:00:00 2001
From: Matthias Andree <matthias.andree@gmx.de>
Date: Mon, 25 May 2009 21:59:14 +0000
Subject: Revise allocbuf to make it a macro, quenches type-aliasing warnings.

svn path=/branches/BRANCH_6-3/; revision=5341
---
 smbutil.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/smbutil.c b/smbutil.c
index 9a8fbeef..18aa1dc4 100644
--- a/smbutil.c
+++ b/smbutil.c
@@ -82,17 +82,16 @@ static void dumpRaw(FILE *fp, unsigned char *buf, size_t len)
     fprintf(fp,"\n");
   }
 
-/* helper function to destructively resize buffers; assumes that bufsiz
+/* helper macro to destructively resize buffers; assumes that bufsiz
  * is initialized to 0 if buf is unallocated! */
-static void allocbuf(char **buf, size_t *bufsiz, size_t need)
-  {
-  if (need > *bufsiz)
-    {
-    *bufsiz = (need < 1024) ? 1024 : need;
-    xfree(*buf);
-    *buf = xmalloc(*bufsiz);
-    }
-  }
+#define allocbuf(buf, bufsiz, need) do { \
+  if ((need) > (bufsiz)) \
+    { \
+    (bufsiz) = ((need) < 1024) ? 1024 : (need); \
+    xfree(buf); \
+    (buf) = xmalloc(bufsiz); \
+    } \
+  } while (0);
 
 /* this is a brute-force conversion from UCS-2LE to US-ASCII, discarding
  * the upper 9 bits */
@@ -102,7 +101,7 @@ static char *unicodeToString(char *p, size_t len)
   static char *buf;
   static size_t bufsiz;
 
-  allocbuf(&buf, &bufsiz, len + 1);
+  allocbuf(buf, bufsiz, len + 1);
 
   for (i=0; i<len; ++i)
     {
@@ -122,7 +121,7 @@ static unsigned char *strToUnicode(char *p)
   size_t l = strlen(p);
   int i = 0;
 
-  allocbuf((char **)&buf, &bufsiz, l * 2);
+  allocbuf(buf, bufsiz, l * 2);
 
   while (l--)
     {
@@ -138,7 +137,7 @@ static unsigned char *toString(char *p, size_t len)
   static unsigned char *buf;
   static size_t bufsiz;
 
-  allocbuf((char **)&buf, &bufsiz, len + 1);
+  allocbuf(buf, bufsiz, len + 1);
 
   memcpy(buf,p,len);
   buf[len] = 0;
-- 
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