fix: data segment names (#286)

Author: laptou

src/module/data.rs

@@ -177,7 +177,7 @@ impl Module {
     pub(crate) fn parse_data(
         &mut self,
         section: wasmparser::DataSectionReader,
-        ids: &IndicesToIds,
+        ids: &mut IndicesToIds,
     ) -> Result<()> {
         log::debug!("parse data section");
         let preallocated = self.data.arena.len() > 0;
@@ -189,12 +189,16 @@ impl Module {
             let id = if preallocated {
                 ids.get_data(i as u32)?
             } else {
-                self.data.arena.alloc_with_id(|id| Data {
+                let id = self.data.arena.alloc_with_id(|id| Data {
                     id,
                     value: Vec::new(),
                     kind: DataKind::Passive,
                     name: None,
-                })
+                });
+
+                ids.push_data(id);
+
+                id
             };
             let data = self.data.get_mut(id);
 

src/module/mod.rs

@@ -167,7 +167,7 @@ impl Module {
                     validator
                         .data_section(&s)
                         .context("failed to parse data section")?;
-                    ret.parse_data(s, &indices)?;
+                    ret.parse_data(s, &mut indices)?;
                 }
                 Payload::TypeSection(s) => {
                     validator