[PATCH] [compiler-rt] Symbolizer refactoring: Make LibbacktraceSymbolizer adopt the SymbolizerTool interface

[Alexey Samsonov]

LGTM

> > On a related note, let me know if you want to replace AddressInfo::FillAddressAndModuleInfo with AddressInfo::FillModuleInfo, or I should do it myself.

> 

> 

> I'll do it in a subsequent patch.


Thanks!


================
Comment at: lib/sanitizer_common/sanitizer_symbolizer_libbacktrace.cc:103
@@ -99,1 +102,3 @@
     }
+    CHECK_EQ(addr, last->info.address);
+    return &last->info;
----------------
Should this be first->info.address?

http://reviews.llvm.org/D7971

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