From a88fd7c8476d1e62fe50aba43d0114c5e69e676d Mon Sep 17 00:00:00 2001
From: Philip Craig <philipjcraig@gmail.com>
Date: Wed, 22 Jun 2022 00:00:00 +0000
Subject: [PATCH] read/elf: handle empty symbol tables (#443)

Return `None` from `ElfFile::symbol_table` and
`ElfFile::dynamic_symbol_table` if the tables are empty.
---
 src/read/elf/file.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/read/elf/file.rs b/src/read/elf/file.rs
index a0e1baad..e1f76a38 100644
--- a/src/read/elf/file.rs
+++ b/src/read/elf/file.rs
@@ -264,6 +264,9 @@ where
     }
 
     fn symbol_table(&'file self) -> Option<ElfSymbolTable<'data, 'file, Elf, R>> {
+        if self.symbols.is_empty() {
+            return None;
+        }
         Some(ElfSymbolTable {
             endian: self.endian,
             symbols: &self.symbols,
@@ -279,6 +282,9 @@ where
     }
 
     fn dynamic_symbol_table(&'file self) -> Option<ElfSymbolTable<'data, 'file, Elf, R>> {
+        if self.dynamic_symbols.is_empty() {
+            return None;
+        }
         Some(ElfSymbolTable {
             endian: self.endian,
             symbols: &self.dynamic_symbols,