test/x509aux.c: Fix argv loop

There are cases when argc is more trustable than proper argv termination.
Since we trust argc in all other test programs, we might as well treat it
the same way in this program.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 780bbb96bf514f0b4013e9c5725614ba5153c497)

diff --git a/test/x509aux.c b/test/x509aux.c
index 4f00196312b089069121482a89fc761cfd911ef3..2c20d6d743355b6eab4f16afaea668e2e9d83abe 100644 (file)
--- a/test/x509aux.c
+++ b/test/x509aux.c
@@ -180,7 +180,6 @@ static int test_certs(BIO *fp)
 int main(int argc, char *argv[])
 {
     BIO *bio_err;
-    const char *certfile;
     const char *p;
     int ret = 1;
 
@@ -197,24 +196,30 @@ int main(int argc, char *argv[])
         CRYPTO_set_mem_debug(1);
     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
 
-    while ((certfile = *++argv) != NULL) {
-        BIO *f = BIO_new_file(certfile, "r");
+    argc--;
+    argv++;
+
+    while (argc >= 1) {
+        BIO *f = BIO_new_file(*argv, "r");
         int ok;
 
         if (f == NULL) {
             fprintf(stderr, "%s: Error opening cert file: '%s': %s\n",
-                    progname, certfile, strerror(errno));
+                    progname, *argv, strerror(errno));
             EXIT(ret);
         }
         ret = !(ok = test_certs(f));
         BIO_free(f);
 
         if (!ok) {
-            printf("%s ERROR\n", certfile);
+            printf("%s ERROR\n", *argv);
             ret = 1;
             break;
         }
-        printf("%s OK\n", certfile);
+        printf("%s OK\n", *argv);
+
+        argc--;
+        argv++;
     }
 
 #ifndef OPENSSL_NO_CRYPTO_MDEBUG