[lld] r256309 - Fix two asan found bugs:

[Rafael Espindola via llvm-commits]

Author: rafael
Date: Tue Dec 22 19:06:39 2015
New Revision: 256309

URL: http://llvm.org/viewvc/llvm-project?rev=256309&view=rev
Log:
Fix two asan found bugs:

We were leaking InputFile subclasses data.
UndefinedElf was missing a classof.

Modified:
    lld/trunk/ELF/InputFiles.cpp
    lld/trunk/ELF/InputFiles.h
    lld/trunk/ELF/Symbols.h

Modified: lld/trunk/ELF/InputFiles.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/InputFiles.cpp?rev=256309&r1=256308&r2=256309&view=diff
==============================================================================
--- lld/trunk/ELF/InputFiles.cpp (original)
+++ lld/trunk/ELF/InputFiles.cpp Tue Dec 22 19:06:39 2015
@@ -31,6 +31,8 @@ public:
 };
 }
 
+InputFile::~InputFile() {}
+
 template <class ELFT>
 ELFFileBase<ELFT>::ELFFileBase(Kind K, MemoryBufferRef M)
     : InputFile(K, M), ELFObj(MB.getBuffer(), ECRAII().getEC()) {}

Modified: lld/trunk/ELF/InputFiles.h
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/InputFiles.h?rev=256309&r1=256308&r2=256309&view=diff
==============================================================================
--- lld/trunk/ELF/InputFiles.h (original)
+++ lld/trunk/ELF/InputFiles.h Tue Dec 22 19:06:39 2015
@@ -35,6 +35,7 @@ class InputFile {
 public:
   enum Kind { ObjectKind, SharedKind, ArchiveKind };
   Kind kind() const { return FileKind; }
+  virtual ~InputFile();
 
   StringRef getName() const { return MB.getBufferIdentifier(); }
 

Modified: lld/trunk/ELF/Symbols.h
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Symbols.h?rev=256309&r1=256308&r2=256309&view=diff
==============================================================================
--- lld/trunk/ELF/Symbols.h (original)
+++ lld/trunk/ELF/Symbols.h Tue Dec 22 19:06:39 2015
@@ -270,6 +270,10 @@ template <class ELFT> class UndefinedElf
 public:
   UndefinedElf(StringRef N, const Elf_Sym &Sym);
   const Elf_Sym &Sym;
+
+  static bool classof(const SymbolBody *S) {
+    return S->kind() == SymbolBody::UndefinedElfKind;
+  }
 };
 
 template <class ELFT> class SharedSymbol : public Defined<ELFT> {