From: Fredrik Tolf <fredrik@dolda2000.com>
Date: Tue, 31 Aug 2010 22:37:29 +0000 (+0200)
Subject: libht: Fixed a bug in trim.
X-Git-Tag: 0.1~44
X-Git-Url: http://dolda2000.com/gitweb/?p=ashd.git;a=commitdiff_plain;h=c7b1ef35df69f303e185a1f53f97f4106dc0c3af

libht: Fixed a bug in trim.
---

diff --git a/lib/req.c b/lib/req.c
index 4cde483..2f975c9 100644
--- a/lib/req.c
+++ b/lib/req.c
@@ -95,9 +95,11 @@ static void trim(struct charbuf *buf)
 {
     char *p;
     
-    for(p = buf->b; (p - buf->b < buf->d) && isspace(*p); p++);
-    memmove(buf->b, p, buf->d -= (p - buf->b));
-    for(p = buf->b + buf->d - 1; (p > buf->b) && isspace(*p); p--, buf->d--);
+    if(buf->d > 0) {
+	for(p = buf->b; (p - buf->b < buf->d) && isspace(*p); p++);
+	memmove(buf->b, p, buf->d -= (p - buf->b));
+	for(p = buf->b + buf->d - 1; (p > buf->b) && isspace(*p); p--, buf->d--);
+    }
 }
 
 int parseheaders(struct hthead *head, FILE *in)