1 files changed, 8 insertions, 0 deletions
diff --git a/core/fxcrt/cfx_string_c_template.h b/core/fxcrt/cfx_string_c_template.h
index b52817d790..4aba2cd4b9 100644
--- a/core/fxcrt/cfx_string_c_template.h
+++ b/core/fxcrt/cfx_string_c_template.h
@@ -9,8 +9,10 @@
 
 #include <algorithm>
 #include <type_traits>
+#include <vector>
 
 #include "core/fxcrt/fx_system.h"
+#include "third_party/base/stl_util.h"
 
 // An immutable string with caller-provided storage which must outlive the
 // string itself. These are not necessarily nul-terminated, so that substring
@@ -53,6 +55,12 @@ class CFX_StringCTemplate {
     m_Length = src.m_Length;
   }
 
+  // Any changes to |vec| invalidate the string.
+  explicit CFX_StringCTemplate(const std::vector<UnsignedType>& vec) {
+    m_Ptr = vec.data();
+    m_Length = pdfium::CollectionSize<FX_STRSIZE>(vec);
+  }
+
   CFX_StringCTemplate& operator=(const CharType* src) {
     m_Ptr = reinterpret_cast<const UnsignedType*>(src);
     m_Length = src ? FXSYS_len(src) : 0;