Make dchecked_vector C++11 compatible.

Since GCC's C++14 ABI is incorrect, we need to drop GCC users back to
C++11. Since ART does not unconditionally use clang, it cannot
unconditionally use C++14 either.

This constructor for std::vector was added in C++14, so we need to
implement it ourselves.

Bug: http://b/25022512
Change-Id: Ib31a312c8c91fe6eccf24d59ef58f2fa8e634e1c

1 files changed, 3 insertions, 1 deletions

diff --git a/runtime/base/dchecked_vector.h b/runtime/base/dchecked_vector.h
index 6ec573a5fb..2bd12df2c3 100644
--- a/runtime/base/dchecked_vector.h
+++ b/runtime/base/dchecked_vector.h
@@ -59,8 +59,10 @@ class dchecked_vector : private std::vector<T, Alloc> {
       : Base() { }
   explicit dchecked_vector(const allocator_type& alloc)
       : Base(alloc) { }
+  // Note that we cannot forward to std::vector(size_type, const allocator_type&) because it is not
+  // available in C++11, which is the latest GCC can support. http://b/25022512
   explicit dchecked_vector(size_type n, const allocator_type& alloc = allocator_type())
-      : Base(n, alloc) { }
+      : Base(alloc) { resize(n); }
   dchecked_vector(size_type n,
                   const value_type& value,
                   const allocator_type& alloc = allocator_type())