From bd0a7f9da10909927dfe91c9f1010d03d07f3b7b Mon Sep 17 00:00:00 2001
From: "ted.mielczarek" <ted.mielczarek@4c0a9323-5329-0410-9bdc-e9ce6186880e>
Date: Fri, 25 Jun 2010 16:56:32 +0000
Subject: [PATCH] Breakpad DWARF support: Check for DWARF line info under Mac
 OS X section names.

For some reason, Mac OS X places DWARF debugging information in sections
whose names begin with "__", rather than the names beginning with "." given
in the DWARF spec. This patch changes google_breakpad::DwarfCUToModule to
look for line number information under both names.
A=jimb R=mark

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@612 4c0a9323-5329-0410-9bdc-e9ce6186880e
---
 src/common/dwarf_cu_to_module.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/common/dwarf_cu_to_module.cc b/src/common/dwarf_cu_to_module.cc
index 3ac833ff..03206d22 100644
--- a/src/common/dwarf_cu_to_module.cc
+++ b/src/common/dwarf_cu_to_module.cc
@@ -619,6 +619,10 @@ void DwarfCUToModule::ReadSourceLines(uint64 offset) {
       = cu_context_->file_context->section_map;
   dwarf2reader::SectionMap::const_iterator map_entry
       = section_map.find(".debug_line");
+  // Mac OS X puts DWARF data in sections whose names begin with "__"
+  // instead of ".".
+  if (map_entry == section_map.end())
+    map_entry = section_map.find("__debug_line");
   if (map_entry == section_map.end()) {
     cu_context_->reporter->MissingSection(".debug_line");
     return;