realloc like a boss, so checksum verification doesn't take minutes.

diff --git a/usr.bin/signify/signify.c b/usr.bin/signify/signify.c
index 00f17ad..0e0101d 100644 (file)
--- a/usr.bin/signify/signify.c
+++ b/usr.bin/signify/signify.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: signify.c,v 1.78 2014/05/06 23:50:53 tedu Exp $ */
+/* $OpenBSD: signify.c,v 1.79 2014/05/14 15:33:41 tedu Exp $ */
 /*
  * Copyright (c) 2013 Ted Unangst <tedu@openbsd.org>
  *
@@ -543,15 +543,18 @@ verifychecksums(char *msg, int argc, char **argv, int quiet)
        char buf[1024];
        char *line, *endline;
        struct checksum *checksums = NULL, *c = NULL;
-       int nchecksums = 0;
+       int nchecksums = 0, checksumspace = 0;
        int i, j, rv, uselist, count, hasfailed;
        int *failures;
 
        line = msg;
        while (line && *line) {
-               if (!(checksums = reallocarray(checksums,
-                   nchecksums + 1, sizeof(*checksums))))
-                       err(1, "realloc");
+               if (nchecksums == checksumspace) {
+                       checksumspace = 2 * (nchecksums + 1);
+                       if (!(checksums = reallocarray(checksums,
+                           checksumspace, sizeof(*checksums))))
+                               err(1, "realloc");
+               }
                c = &checksums[nchecksums++];
                if ((endline = strchr(line, '\n')))
                        *endline++ = '\0';