X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=lib%2Fgbuf.h;h=0775f20cb3738bb976176a72af94918322261f9d;hb=2c9cf5b6e38800f6d79e5140f3b8565961374627;hp=c2853ba1198041a5d5463c569730cfaf05635bad;hpb=049563e01aca4e73169e9668969d9d980a4ef17c;p=libucw.git

diff --git a/lib/gbuf.h b/lib/gbuf.h
index c2853ba1..0775f20c 100644
--- a/lib/gbuf.h
+++ b/lib/gbuf.h
@@ -1,5 +1,5 @@
 /*
- *	A simple growing buffer
+ *	UCW Library -- A simple growing buffer
  *
  *	(c) 2004, Robert Spalek <robert@ucw.cz>
  *
@@ -7,6 +7,9 @@
  *
  *	GBUF_TYPE	data type of records stored in the buffer
  *	GBUF_PREFIX(x)	add a name prefix to all global symbols
+ *
+ *	This software may be freely distributed and used according to the terms
+ *	of the GNU Lesser General Public License.
  */
 
 #include <stdlib.h>
@@ -40,16 +43,13 @@ static inline void
 GBUF_PREFIX(realloc)(BUF_T *b, uns len)
 {
   b->len = len;
-  if (b->ptr)
-    b->ptr = xrealloc(b->ptr, len * sizeof(GBUF_TYPE));
-  else
-    b->ptr = xmalloc(len * sizeof(GBUF_TYPE));
+  b->ptr = xrealloc(b->ptr, len * sizeof(GBUF_TYPE));
 }
 
 static inline void
 GBUF_PREFIX(grow)(BUF_T *b, uns len)
 {
-  if (len <= b->len)
+  if (likely(len <= b->len))
     return;
   if (len < 2*b->len)			// to ensure logarithmic cost
     len = 2*b->len;
@@ -58,3 +58,4 @@ GBUF_PREFIX(grow)(BUF_T *b, uns len)
 
 #undef	GBUF_TYPE
 #undef	GBUF_PREFIX
+#undef	BUF_T