strbuf: make sure buffer is zero-terminated

diff --git a/strbuf.c b/strbuf.c
index 67448b7b07aa9d07b0c8cc250e3e0fad64c8fb5e..73e0400596558cc37e7342437f3484d6a762c110 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -10,6 +10,15 @@ int prefixcmp(const char *str, const char *prefix)
                        return (unsigned char)*prefix - (unsigned char)*str;
 }
 
+int suffixcmp(const char *str, const char *suffix)
+{
+       int len = strlen(str), suflen = strlen(suffix);
+       if (len < suflen)
+               return -1;
+       else
+               return strcmp(str + len - suflen, suffix);
+}
+
 /*
  * Used as the default ->buf value, so that people can always assume
  * buf is non NULL and ->buf is NUL terminated even for a freshly
@@ -21,8 +30,10 @@ void strbuf_init(struct strbuf *sb, size_t hint)
 {
        sb->alloc = sb->len = 0;
        sb->buf = strbuf_slopbuf;
-       if (hint)
+       if (hint) {
                strbuf_grow(sb, hint);
+               sb->buf[0] = '\0';
+       }
 }
 
 void strbuf_release(struct strbuf *sb)