Fix compile error with libstdc++.

By adding a ctor to create fuzzer_allocator<T> from fuzzer_allocator<U>.
This mimics construcotrs of std::allocator<T>.

Without the constructors, some versions of libstdc++ can't compile
`vector<bool, fuzzer_allocator<bool>>`.

llvm-svn: 334077

1 files changed, 5 insertions, 0 deletions

diff --git a/compiler-rt/lib/fuzzer/FuzzerDefs.h b/compiler-rt/lib/fuzzer/FuzzerDefs.h
index dde1b4b83f9..4868bc2d3ea 100644
--- a/compiler-rt/lib/fuzzer/FuzzerDefs.h
+++ b/compiler-rt/lib/fuzzer/FuzzerDefs.h
@@ -155,6 +155,11 @@ extern ExternalFunctions *EF;
 template<typename T>
   class fuzzer_allocator: public std::allocator<T> {
     public:
+      fuzzer_allocator() = default;
+
+      template<class U>
+      fuzzer_allocator(const fuzzer_allocator<U>&) {}
+
       template<class Other>
       struct rebind { typedef fuzzer_allocator<Other> other;  };
   };