Fix an assertion failure that happened when trying to add a page

with makewhatis -d to a completely empty database.
Reported by Mark Patruck <mark at wrapped dot cx>, thanks!

diff --git a/usr.bin/mandoc/dba_read.c b/usr.bin/mandoc/dba_read.c
index c7128de..b260ac1 100644 (file)
--- a/usr.bin/mandoc/dba_read.c
+++ b/usr.bin/mandoc/dba_read.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: dba_read.c,v 1.1 2016/08/01 10:32:39 schwarze Exp $ */
+/*     $OpenBSD: dba_read.c,v 1.2 2016/08/04 09:33:53 schwarze Exp $ */
 /*
  * Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -45,7 +45,7 @@ dba_read(const char *fname)
        if (dbm_open(fname) == -1)
                return NULL;
        npages = dbm_page_count();
-       dba = dba_new(npages);
+       dba = dba_new(npages < 128 ? 128 : npages);
        for (ip = 0; ip < npages; ip++) {
                pdata = dbm_page_get(ip);
                page = dba_page_new(dba->pages, pdata->name, pdata->sect,