Validate function section count vs code section count (bytecodealliance#93)

* Update binary.wast tests

* Validate function and code section counts

* Update version 0.29.2

Author: yurydelendik

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "wasmparser"
-version = "0.29.1"
+version = "0.29.2"
 authors = ["Yury Delendik <ydelendik@mozilla.com>"]
 license = "Apache-2.0 WITH LLVM-exception"
 repository = "https://github.com/yurydelendik/wasmparser.rs"

src/validator.rs

@@ -2111,6 +2111,13 @@ impl<'a> ValidatingParser<'a> {
                 }
             }
             ParserState::EndWasm => {
+                if self.func_type_indices.len()
+                    != self.current_func_index as usize + self.func_imports_count as usize
+                {
+                    self.validation_error = self.create_validation_error(
+                        "function and code section have inconsistent lengths",
+                    );
+                }
                 if let Some(data_count) = self.data_count {
                     if data_count != self.data_found {
                         self.validation_error = self.create_validation_error(