From: Zachary Turner <zturner@google.com>
Date: Mon, 7 Aug 2017 20:24:01 +0000 (+0000)
Subject: [llvm-pdbutil] Don't crash when a section contrib's isect is invalid.
X-Git-Tag: android-x86-7.1-r4~12447
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=1fea7c97d1cc191a0f991ed9d293c4c053e7417a;p=android-x86%2Fexternal-llvm.git

[llvm-pdbutil] Don't crash when a section contrib's isect is invalid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310298 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/tools/llvm-pdbutil/DumpOutputStyle.cpp b/tools/llvm-pdbutil/DumpOutputStyle.cpp
index 60e0b75172e..99dd358fbf9 100644
--- a/tools/llvm-pdbutil/DumpOutputStyle.cpp
+++ b/tools/llvm-pdbutil/DumpOutputStyle.cpp
@@ -1180,8 +1180,12 @@ Error DumpOutputStyle::dumpSectionContribs() {
     }
     void visit(const SectionContrib &SC) override {
       assert(SC.ISect > 0);
-      StringRef SectionName = Names[SC.ISect - 1];
-      std::string NameInsert = formatv("[{0}]", SectionName).str();
+      std::string NameInsert;
+      if (SC.ISect < Names.size()) {
+        StringRef SectionName = Names[SC.ISect - 1];
+        NameInsert = formatv("[{0}]", SectionName).str();
+      } else
+        NameInsert = "[???]";
       P.formatLine("SC{5}  | mod = {2}, {0}, size = {1}, data crc = {3}, reloc "
                    "crc = {4}",
                    formatSegmentOffset(SC.ISect, SC.Off), fmtle(SC.Size),