Update indices of functions in name section while injecting gas function

src/gas/mod.rs

@@ -9,6 +9,7 @@ mod validation;
 
 use crate::std::cmp::min;
 use crate::std::mem;
+use crate::std::string::String;
 use crate::std::vec::Vec;
 
 use parity_wasm::{elements, elements::ValueType, builder};
@@ -501,6 +502,20 @@ pub fn inject_gas_counter<R: Rules>(
 			elements::Section::Start(start_idx) => {
 				if *start_idx >= gas_func { *start_idx += 1}
 			},
+            elements::Section::Name(section) => {
+                if let Some(funcs) = section.functions_mut() {
+                    let mut new_names = elements::IndexMap::<String>::default();
+                    for (idx, func) in funcs.names().iter() {
+                        if idx > gas_func {
+                            new_names.insert(idx + 1, String::from(func));
+                        } else {
+                            new_names.insert(idx, String::from(func));
+                        }
+                    }
+
+                    *funcs.names_mut() = new_names;
+                }
+            }
 			_ => { }
 		}
 	}