fix symbol functions

src/common/symbol.rs

@@ -50,7 +50,13 @@ impl Symbols {
         R: Relocatable,
     {
         self.value_index.map_or(Ok(&[]), |v| {
-            object.symbol_value(self.indexes[v].symbol_index)
+            let si = self.indexes[v];
+            // can this be compile time checked??
+            if si.object_index != object.object_index() {
+                Err(Error::InvalidObjectIndex)
+            } else {
+                object.symbol_value(si.symbol_index)
+            }
         })
     }
 

src/formats/elf/object.rs

@@ -224,7 +224,7 @@ impl Relocatable for ElfObject {
             .ok_or(Error::InvalidSectionIndex)?;
         let sh_offset: usize = shdr.sh_offset as usize;
 
-        Ok(sh_offset)
+        Ok(sh_offset + s64.st_value as usize)
     }
 
     fn symbol_needs_resolving(&self, index: usize) -> bool {