qapi: Fix QemuOpts visitor regression on unvisited input

An off-by-one in commit 15c2f66 meant that we were failing to check for unparsed input in all QemuOpts visitors. Recent testsuite additions show that fixing the obvious bug with bogus fields will also fix the case of an incomplete list visit; update the tests to match the new behavior. Simple testcase: ./x86_64-softmmu/qemu-system-x86_64 -nodefaults -nographic -qmp stdio -numa node,size=1g failed to diagnose that 'size' is not a valid argument to -numa, and now once again reports: qemu-system-x86_64: -numa node,size=1g: Invalid parameter 'size' See also https://bugzilla.redhat.com/show_bug.cgi?id=1434666 CC: [email protected] Signed-off-by: Eric Blake <[email protected]> Reviewed-by: Michael Roth <[email protected]> Tested-by: Laurent Vivier <[email protected]> Message-Id: <[email protected]> Reviewed-by: Markus Armbruster <[email protected]> Signed-off-by: Markus Armbruster <[email protected]>
LiliumOS · Mar 22, 2017 · 21f88d0 · 21f88d0
1 parent 9a6d1ac
commit 21f88d0
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Showing 2 changed files with 11 additions and 8 deletions.
diff --git a/qapi/opts-visitor.c b/qapi/opts-visitor.c
@@ -164,7 +164,7 @@ opts_check_struct(Visitor *v, Error **errp)
     GHashTableIter iter;
     GQueue *any;
 
-    if (ov->depth > 0) {
+    if (ov->depth > 1) {
         return;
     }
 
@@ -276,8 +276,8 @@ static void
 opts_check_list(Visitor *v, Error **errp)
 {
     /*
-     * FIXME should set error when unvisited elements remain.  Mostly
-     * harmless, as the generated visits always visit all elements.
+     * Unvisited list elements will be reported later when checking
+     * whether unvisited struct members remain.
      */
 }
 

diff --git a/tests/test-opts-visitor.c b/tests/test-opts-visitor.c
@@ -175,6 +175,7 @@ expect_u64_max(OptsVisitorFixture *f, gconstpointer test_data)
 static void
 test_opts_range_unvisited(void)
 {
+    Error *err = NULL;
     intList *list = NULL;
     intList *tail;
     QemuOpts *opts;
@@ -199,10 +200,11 @@ test_opts_range_unvisited(void)
     g_assert_cmpint(tail->value, ==, 1);
     tail = (intList *)visit_next_list(v, (GenericList *)tail, sizeof(*list));
     g_assert(tail);
-    visit_check_list(v, &error_abort); /* BUG: unvisited tail not reported */
+    visit_check_list(v, &error_abort); /* unvisited tail ignored until... */
     visit_end_list(v, (void **)&list);
 
-    visit_check_struct(v, &error_abort);
+    visit_check_struct(v, &err); /* ...here */
+    error_free_or_abort(&err);
     visit_end_struct(v, NULL);
 
     qapi_free_intList(list);
@@ -250,6 +252,7 @@ test_opts_range_beyond(void)
 static void
 test_opts_dict_unvisited(void)
 {
+    Error *err = NULL;
     QemuOpts *opts;
     Visitor *v;
     UserDefOptions *userdef;
@@ -258,11 +261,11 @@ test_opts_dict_unvisited(void)
                            &error_abort);
 
     v = opts_visitor_new(opts);
-    /* BUG: bogus should be diagnosed */
-    visit_type_UserDefOptions(v, NULL, &userdef, &error_abort);
+    visit_type_UserDefOptions(v, NULL, &userdef, &err);
+    error_free_or_abort(&err);
     visit_free(v);
     qemu_opts_del(opts);
-    qapi_free_UserDefOptions(userdef);
+    g_assert(!userdef);
 }
 
 int