upstream: fix some memleaks in test_helper code

bz#3037 from Jitendra Sharma

OpenBSD-Regress-ID: 71440fa9186f5842a65ce9a27159385c6cb6f751

1 files changed, 13 insertions, 4 deletions

diff --git a/regress/unittests/test_helper/test_helper.c b/regress/unittests/test_helper/test_helper.c
index e7a47b265..127e76c2b 100644
--- a/regress/unittests/test_helper/test_helper.c
+++ b/regress/unittests/test_helper/test_helper.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: test_helper.c,v 1.11 2018/11/23 02:53:57 dtucker Exp $        */
+/*      $OpenBSD: test_helper.c,v 1.12 2019/08/02 01:41:24 djm Exp $    */
 /*
  * Copyright (c) 2011 Damien Miller <djm@mindrot.org>
  *
@@ -391,6 +391,8 @@ assert_mem(const char *file, int line, const char *a1, const char *a2,
     const void *aa1, const void *aa2, size_t l, enum test_predicate pred)
 {
         int r;
+        char *aa1_tohex = NULL;
+        char *aa2_tohex = NULL;
 
         if (l == 0)
                 return;
@@ -401,8 +403,12 @@ assert_mem(const char *file, int line, const char *a1, const char *a2,
         r = memcmp(aa1, aa2, l);
         TEST_CHECK_INT(r, pred);
         test_header(file, line, a1, a2, "STRING", pred);
-        fprintf(stderr, "%12s = %s (len %zu)\n", a1, tohex(aa1, MIN(l, 256)), l);
-        fprintf(stderr, "%12s = %s (len %zu)\n", a2, tohex(aa2, MIN(l, 256)), l);
+        aa1_tohex = tohex(aa1, MIN(l, 256));
+        aa2_tohex = tohex(aa2, MIN(l, 256));
+        fprintf(stderr, "%12s = %s (len %zu)\n", a1, aa1_tohex, l);
+        fprintf(stderr, "%12s = %s (len %zu)\n", a2, aa2_tohex, l);
+        free(aa1_tohex);
+        free(aa2_tohex);
         test_die();
 }
 
@@ -427,6 +433,7 @@ assert_mem_filled(const char *file, int line, const char *a1,
         size_t where = -1;
         int r;
         char tmp[64];
+        char *aa1_tohex = NULL;
 
         if (l == 0)
                 return;
@@ -436,8 +443,10 @@ assert_mem_filled(const char *file, int line, const char *a1,
         r = memvalcmp(aa1, v, l, &where);
         TEST_CHECK_INT(r, pred);
         test_header(file, line, a1, NULL, "MEM_ZERO", pred);
+        aa1_tohex = tohex(aa1, MIN(l, 20));
         fprintf(stderr, "%20s = %s%s (len %zu)\n", a1,
-            tohex(aa1, MIN(l, 20)), l > 20 ? "..." : "", l);
+            aa1_tohex, l > 20 ? "..." : "", l);
+        free(aa1_tohex);
         snprintf(tmp, sizeof(tmp), "(%s)[%zu]", a1, where);
         fprintf(stderr, "%20s = 0x%02x (expected 0x%02x)\n", tmp,
             ((u_char *)aa1)[where], v);