diff --git a/imgui.h b/imgui.h
index 98e05d9c7..8d0336cc2 100644
--- a/imgui.h
+++ b/imgui.h
@@ -908,12 +908,13 @@ public:
     inline int                  _grow_capacity(int new_size)    { int new_capacity = Capacity ? (Capacity + Capacity/2) : 8; return new_capacity > new_size ? new_capacity : new_size; }
 
     inline void                 resize(int new_size)            { if (new_size > Capacity) reserve(_grow_capacity(new_size)); Size = new_size; }
+    inline void                 resize(int new_size, const T& v){ if (new_size > Capacity) reserve(_grow_capacity(new_size)); if (new_size > Size) for (int n = Size; n < new_size; n++) Data[n] = v; Size = new_size; }
     inline void                 reserve(int new_capacity)
     {
         if (new_capacity <= Capacity) return;
-        T* new_data = (value_type*)ImGui::MemAlloc((size_t)new_capacity * sizeof(value_type));
+        T* new_data = (value_type*)ImGui::MemAlloc((size_t)new_capacity * sizeof(T));
         if (Data)
-            memcpy(new_data, Data, (size_t)Size * sizeof(value_type));
+            memcpy(new_data, Data, (size_t)Size * sizeof(T));
         ImGui::MemFree(Data);
         Data = new_data;
         Capacity = new_capacity;
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index 3eb8eea6f..b2f599d8d 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1820,16 +1820,10 @@ void ImFont::SetFallbackChar(ImWchar c)
 void ImFont::GrowIndex(int new_size)
 {
     IM_ASSERT(IndexXAdvance.Size == IndexLookup.Size);
-    int old_size = IndexLookup.Size;
-    if (new_size <= old_size)
+    if (new_size <= IndexLookup.Size)
         return;
-    IndexXAdvance.resize(new_size);
-    IndexLookup.resize(new_size);
-    for (int i = old_size; i < new_size; i++)
-    {
-        IndexXAdvance[i] = -1.0f;
-        IndexLookup[i] = (unsigned short)-1;
-    }
+    IndexXAdvance.resize(new_size, -1.0f);
+    IndexLookup.resize(new_size, (unsigned short)-1);
 }
 
 void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)