From: Peter Collingbourne <peter@pcc.me.uk>
Date: Fri, 3 Feb 2017 16:53:55 +0000 (+0000)
Subject: Object: Handle files without a dynamic symbol table.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=055ebfae9acba84b49d20c8ec45d6333f0a23013;p=llvm

Object: Handle files without a dynamic symbol table.

Differential Revision: https://reviews.llvm.org/D29482

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294013 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Object/ELFObjectFile.h b/include/llvm/Object/ELFObjectFile.h
index 64b1921143c..9e95f2958aa 100644
--- a/include/llvm/Object/ELFObjectFile.h
+++ b/include/llvm/Object/ELFObjectFile.h
@@ -895,6 +895,8 @@ elf_symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_begin() const {
 template <class ELFT>
 elf_symbol_iterator ELFObjectFile<ELFT>::dynamic_symbol_end() const {
   const Elf_Shdr *SymTab = DotDynSymSec;
+  if (!SymTab)
+    return dynamic_symbol_begin();
   DataRefImpl Sym = toDRI(SymTab, SymTab->sh_size / sizeof(Elf_Sym));
   return basic_symbol_iterator(SymbolRef(Sym, this));
 }
diff --git a/test/Object/nm-shared-object.test b/test/Object/nm-shared-object.test
index 32ae6a86152..975cf760ba9 100644
--- a/test/Object/nm-shared-object.test
+++ b/test/Object/nm-shared-object.test
@@ -29,3 +29,5 @@ RUN: not llvm-nm -D %p/Inputs/trivial-object-test.coff-i386 2>&1 \
 RUN:         | FileCheck %s -check-prefix ERROR
 
 ERROR: File format has no dynamic symbol table.
+
+RUN: llvm-nm -D %p/Inputs/trivial-object-test.elf-i386 | count 0