generator.ml: avoid a warning about signed overflow in tests.c

[libguestfs.git] / src / generator.ml

diff --git a/src/generator.ml b/src/generator.ml
index 46fcf2c..2e2b70e 100755 (executable)
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -5379,7 +5379,7 @@ static void print_table (char const *const *argv)
 int main (int argc, char *argv[])
 {
   char c = 0;
-  int failed = 0;
+  unsigned long int n_failed = 0;
   const char *filename;
   int fd;
   int nr_tests, test_num = 0;
@@ -5513,7 +5513,7 @@ int main (int argc, char *argv[])
       pr "  printf (\"%%3d/%%3d %s\\n\", test_num, nr_tests);\n" test_name;
       pr "  if (%s () == -1) {\n" test_name;
       pr "    printf (\"%s FAILED\\n\");\n" test_name;
-      pr "    failed++;\n";
+      pr "    n_failed++;\n";
       pr "  }\n";
   ) test_names;
   pr "\n";
@@ -5524,8 +5524,8 @@ int main (int argc, char *argv[])
   pr "  unlink (\"test3.img\");\n";
   pr "\n";
 
-  pr "  if (failed > 0) {\n";
-  pr "    printf (\"***** %%d / %%d tests FAILED *****\\n\", failed, nr_tests);\n";
+  pr "  if (n_failed > 0) {\n";
+  pr "    printf (\"***** %%lu / %%d tests FAILED *****\\n\", n_failed, nr_tests);\n";
   pr "    exit (1);\n";
   pr "  }\n";
   pr "\n";
@@ -6692,6 +6692,29 @@ copy_table (char * const * argv)
 ";
 
   (* Struct copy functions. *)
+
+  let emit_ocaml_copy_list_function typ =
+    pr "static CAMLprim value\n";
+    pr "copy_%s_list (const struct guestfs_%s_list *%ss)\n" typ typ typ;
+    pr "{\n";
+    pr "  CAMLparam0 ();\n";
+    pr "  CAMLlocal2 (rv, v);\n";
+    pr "  unsigned int i;\n";
+    pr "\n";
+    pr "  if (%ss->len == 0)\n" typ;
+    pr "    CAMLreturn (Atom (0));\n";
+    pr "  else {\n";
+    pr "    rv = caml_alloc (%ss->len, 0);\n" typ;
+    pr "    for (i = 0; i < %ss->len; ++i) {\n" typ;
+    pr "      v = copy_%s (&%ss->val[i]);\n" typ typ;
+    pr "      caml_modify (&Field (rv, i), v);\n";
+    pr "    }\n";
+    pr "    CAMLreturn (rv);\n";
+    pr "  }\n";
+    pr "}\n";
+    pr "\n";
+  in
+
   List.iter (
     fun (typ, cols) ->
       let has_optpercent_col =
@@ -6738,29 +6761,17 @@ copy_table (char * const * argv)
       pr "  CAMLreturn (rv);\n";
       pr "}\n";
       pr "\n";
-
-      pr "static CAMLprim value\n";
-      pr "copy_%s_list (const struct guestfs_%s_list *%ss)\n"
-        typ typ typ;
-      pr "{\n";
-      pr "  CAMLparam0 ();\n";
-      pr "  CAMLlocal2 (rv, v);\n";
-      pr "  int i;\n";
-      pr "\n";
-      pr "  if (%ss->len == 0)\n" typ;
-      pr "    CAMLreturn (Atom (0));\n";
-      pr "  else {\n";
-      pr "    rv = caml_alloc (%ss->len, 0);\n" typ;
-      pr "    for (i = 0; i < %ss->len; ++i) {\n" typ;
-      pr "      v = copy_%s (&%ss->val[i]);\n" typ typ;
-      pr "      caml_modify (&Field (rv, i), v);\n";
-      pr "    }\n";
-      pr "    CAMLreturn (rv);\n";
-      pr "  }\n";
-      pr "}\n";
-      pr "\n";
   ) structs;
 
+  (* Emit a copy_TYPE_list function definition only if that function is used. *)
+  List.iter (
+    function
+    | typ, (RStructListOnly | RStructAndList) ->
+        (* generate the function for typ *)
+        emit_ocaml_copy_list_function typ
+    | typ, _ -> () (* empty *)
+  ) rstructs_used;
+
   (* The wrappers. *)
   List.iter (
     fun (name, style, _, _, _, _, _) ->
@@ -6770,6 +6781,10 @@ copy_table (char * const * argv)
       let needs_extra_vs =
         match fst style with RConstOptString _ -> true | _ -> false in
 
+      pr "/* Emit prototype to appease gcc's -Wmissing-prototypes. */\n";
+      pr "CAMLprim value ocaml_guestfs_%s (value %s" name (List.hd params);
+      List.iter (pr ", value %s") (List.tl params); pr ");\n";
+
       pr "CAMLprim value\n";
       pr "ocaml_guestfs_%s (value %s" name (List.hd params);
       List.iter (pr ", value %s") (List.tl params);
@@ -6903,6 +6918,9 @@ copy_table (char * const * argv)
       pr "\n";
 
       if List.length params > 5 then (
+        pr "/* Emit prototype to appease gcc's -Wmissing-prototypes. */\n";
+        pr "CAMLprim value ";
+        pr "ocaml_guestfs_%s_byte (value *argv, int argn);\n" name;
         pr "CAMLprim value\n";
         pr "ocaml_guestfs_%s_byte (value *argv, int argn)\n" name;
         pr "{\n";