Fix warnings

gumbo-parser/src/char_ref.c

@@ -22218,6 +22218,8 @@ size_t match_named_char_ref (
 	}
 
 #line 2150 "src/char_ref.rl"
+  (void)ts;
+  (void)act;
   size = p - str;
   return cs >= 7623? size:0;
 }

gumbo-parser/src/char_ref.rl

@@ -2147,6 +2147,8 @@ size_t match_named_char_ref (
   output[0] = output[1] = kGumboNoChar;
   %% write init;
   %% write exec;
+  (void)ts;
+  (void)act;
   size = p - str;
   return cs >= %%{ write first_final; }%%? size:0;
 }

gumbo-parser/src/error.c

@@ -516,6 +516,9 @@ const char* gumbo_error_code(const GumboError* error) {
   case GUMBO_ERR_PARSER:
     return "generic-parser";
   }
+  // Silence warning about control reaching end of non-void function.
+  // All errors _should_ be handled in the switch statement.
+  return "generic-parser";
 }
 
 static void error_to_string (

gumbo-parser/src/parser.c

@@ -4782,10 +4782,10 @@ GumboOutput* gumbo_parse_with_options (
         break;
     }
     gumbo_debug (
-      "Handling %s token @%zu:%zu in state %u.\n",
+      "Handling %s token @%lu:%lu in state %u.\n",
       (char*) token_type,
-      token.position.line,
-      token.position.column,
+      (unsigned long)token.position.line,
+      (unsigned long)token.position.column,
       state->_insertion_mode
     );
 

gumbo-parser/test/token_buffer.cc

@@ -34,7 +34,7 @@ class GumboCharacterTokenBufferTest : public GumboTest {
 
   void Fill(const char* input, size_t size = -1) {
     gumbo_character_token_buffer_clear(&buffer_);
-    if (size == -1)
+    if (size == static_cast<size_t>(-1))
       size = strlen(input);
     text_ = input;
     gumbo_tokenizer_state_init(&parser_, input, size);
@@ -192,6 +192,7 @@ TEST_F(GumboCharacterTokenBufferTest, CarriageReturn) {
   EXPECT_EQ(0, t.position.offset);
   EXPECT_EQ(&text_[0], t.original_text.data);
   EXPECT_EQ(6, t.original_text.length);
+  errors_are_expected_ = true;
 }
 
 }  // namespace

gumbo-parser/test/tokenizer.cc

@@ -45,7 +45,7 @@ class GumboTokenizerTest : public GumboTest {
       gumbo_token_destroy(&token_);
     text_ = input;
     gumbo_tokenizer_state_destroy(&parser_);
-    if (size == -1)
+    if (size == static_cast<size_t>(-1))
       size = strlen(input);
     gumbo_tokenizer_state_init(&parser_, input, size);
     at_start_ = true;

scripts/entities.rb

@@ -88,6 +88,8 @@
   output[0] = output[1] = kGumboNoChar;
   %% write init;
   %% write exec;
+  (void)ts;
+  (void)act;
   size = p - str;
   return cs >= %%{ write first_final; }%%? size:0;
 }