Resolve compilation errors if compiled with more stringent semantic checks.

Adding Travis test to build with strict warnings.
Fixing a warning in a test which used signed/unsigned integer comparison.

1 files changed, 8 insertions, 1 deletions

diff --git a/upb/json/parser.rl b/upb/json/parser.rl
index 0379be4..b171617 100644
--- a/upb/json/parser.rl
+++ b/upb/json/parser.rl
@@ -1084,7 +1084,7 @@ static void end_object(upb_json_parser *p) {
   main := ws object ws;
 }%%
 
-%% write data;
+%% write data noerror nofinal;
 
 size_t parse(void *closure, const void *hd, const char *buf, size_t size,
              const upb_bufhandle *handle) {
@@ -1122,6 +1122,13 @@ error:
 bool end(void *closure, const void *hd) {
   UPB_UNUSED(closure);
   UPB_UNUSED(hd);
+
+  // Prevent compile warning on unused static constants.
+  UPB_UNUSED(json_start);
+  UPB_UNUSED(json_en_number_machine);
+  UPB_UNUSED(json_en_string_machine);
+  UPB_UNUSED(json_en_value_machine);
+  UPB_UNUSED(json_en_main);
   return true;
 }