diff -up jq-1.6/src/jq_test.c.orig jq-1.6/src/jq_test.c
--- jq-1.6/src/jq_test.c.orig	2024-05-03 11:47:47.403617188 +0200
+++ jq-1.6/src/jq_test.c	2024-05-03 11:48:46.569675199 +0200
@@ -16,6 +16,7 @@ static void run_jq_pthread_tests();
 
 int jq_testsuite(jv libdirs, int verbose, int argc, char* argv[]) {
   FILE *testdata = stdin;
+  const char *testdata_filename = NULL;
   int skip = -1;
   int take = -1;
   jv_test();
@@ -28,18 +29,24 @@ int jq_testsuite(jv libdirs, int verbose
         take = atoi(argv[i+1]);
         i++;
       } else {
-        testdata = fopen(argv[i], "r");
-        if (!testdata) {
-          perror("fopen");
-          exit(1);
-        }
+        testdata_filename = argv[i];
       }
     }
   }
+  if (testdata_filename) {
+    testdata = fopen(testdata_filename, "r");
+    if (!testdata) {
+      perror("fopen");
+      exit(1);
+    }
+  }
   run_jq_tests(libdirs, verbose, testdata, skip, take);
 #ifdef HAVE_PTHREAD
   run_jq_pthread_tests();
 #endif
+  if (testdata_filename) {
+    fclose(testdata);
+  }
   return 0;
 }
 
diff -up jq-1.6/src/locfile.c.orig jq-1.6/src/locfile.c
--- jq-1.6/src/locfile.c.orig	2018-11-02 02:49:29.000000000 +0100
+++ jq-1.6/src/locfile.c	2024-05-03 11:15:46.562476303 +0200
@@ -72,6 +72,7 @@ void locfile_locate(struct locfile* l, l
   }
 
   jv m1 = jv_string_vfmt(fmt, fmtargs);
+  va_end(fmtargs);
   if (!jv_is_valid(m1)) {
     jq_report_error(l->jq, m1);
     return;