From: Adam Dickmeiss <adam@indexdata.dk>
Date: Sat, 19 Apr 2014 09:17:22 +0000 (+0200)
Subject: wrbuf_buf: make it always return non-NULL
X-Git-Tag: v5.1.1~3
X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=commitdiff_plain;h=f9bc1d0850c92394c8dd3f8d05691e71811baf95;ds=sidebyside

wrbuf_buf: make it always return non-NULL

Also, wrbuf_buf will return same buffer as previous call to wrbuf_cstr.
---

diff --git a/src/wrbuf.c b/src/wrbuf.c
index fa42894..6d9b145 100644
--- a/src/wrbuf.c
+++ b/src/wrbuf.c
@@ -31,6 +31,7 @@ WRBUF wrbuf_alloc(void)
     n->buf = 0;
     n->size = 0;
     n->pos = 0;
+    wrbuf_grow(n, 1);
     return n;
 }
 
@@ -262,9 +263,7 @@ void wrbuf_iconv_reset(WRBUF b, yaz_iconv_t cd)
 
 const char *wrbuf_cstr(WRBUF b)
 {
-    if (b->pos == 0)
-	return "";
-    assert(b->pos <= b->size);
+    assert(b && b->pos <= b->size);
     b->buf[b->pos] = '\0';
     return b->buf;
 }