[llvm-objcopy] Fix the behavior of --strip-* and --keep-symbol

If one runs llvm-objcopy --strip-all --keep-symbol foo
and the symbol table indeed contains the symbol "foo"
then it should not be removed.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D47052

llvm-svn: 333008

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/tools/llvm-objcopy/Object.h b/llvm/tools/llvm-objcopy/Object.h
index ac384c1fdfe..e4307794456 100644
--- a/llvm/tools/llvm-objcopy/Object.h
+++ b/llvm/tools/llvm-objcopy/Object.h
@@ -365,6 +365,7 @@ public:
                  SectionBase *DefinedIn, uint64_t Value, uint8_t Visibility,
                  uint16_t Shndx, uint64_t Sz);
   void addSymbolNames();
+  bool empty() const { return Symbols.empty(); }
   const SectionBase *getStrTab() const { return SymbolNames; }
   const Symbol *getSymbolByIndex(uint32_t Index) const;
   void updateSymbols(function_ref<void(Symbol &)> Callable);