From: Nick Lewycky <nicholas@mxc.ca>
Date: Tue, 26 Jul 2011 08:40:36 +0000 (+0000)
Subject: Don't try to dereference syms[0] on an empty vector. Reported by Todd Jackson
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5e0ac58bef2632a804358ec42a6ba5c6be42c450;p=oota-llvm.git

Don't try to dereference syms[0] on an empty vector. Reported by Todd Jackson
and Jeffrey Bosboom!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136066 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/tools/gold/gold-plugin.cpp b/tools/gold/gold-plugin.cpp
index 9e43bef31f8..8cb4fb4bca4 100644
--- a/tools/gold/gold-plugin.cpp
+++ b/tools/gold/gold-plugin.cpp
@@ -360,6 +360,8 @@ static ld_plugin_status all_symbols_read_hook(void) {
   bool anySymbolsPreserved = false;
   for (std::list<claimed_file>::iterator I = Modules.begin(),
          E = Modules.end(); I != E; ++I) {
+    if (I->syms.empty())
+      continue;
     (*get_symbols)(I->handle, I->syms.size(), &I->syms[0]);
     for (unsigned i = 0, e = I->syms.size(); i != e; i++) {
       if (I->syms[i].resolution == LDPR_PREVAILING_DEF) {