Minor warning fixes.

imgui_demo.cpp

@@ -9374,7 +9374,7 @@ static void ShowExampleAppCustomRendering(bool* p_open)
                 draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col, rounding, ImDrawFlags_None, th);      x += sz + spacing;  // Square with all rounded corners
                 draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col, rounding, corners_tl_br, th);         x += sz + spacing;  // Square with two rounded corners
                 draw_list->AddTriangle(ImVec2(x+sz*0.5f,y), ImVec2(x+sz, y+sz-0.5f), ImVec2(x, y+sz-0.5f), col, th);x += sz + spacing;  // Triangle
-                //draw_list->AddTriangle(ImVec2(x+sz*0.2f,y), ImVec2(x, y+sz-0.5f), ImVec2(x+sz*0.4f, y+sz-0.5f), col, th);x+= sz*0.4f + spacing; // Thin triangle
+                draw_list->AddTriangle(ImVec2(x+sz*0.2f,y), ImVec2(x, y+sz-0.5f), ImVec2(x+sz*0.4f, y+sz-0.5f), col, th);x+= sz*0.4f + spacing; // Thin triangle
                 PathConcaveShape(draw_list, x, y, sz); draw_list->PathStroke(col, ImDrawFlags_Closed, th);          x += sz + spacing;  // Concave Shape
                 //draw_list->AddPolyline(concave_shape, IM_ARRAYSIZE(concave_shape), col, ImDrawFlags_Closed, th);
                 draw_list->AddLine(ImVec2(x, y), ImVec2(x + sz, y), col, th);                                       x += sz + spacing;  // Horizontal line (note: drawing a filled rectangle will be faster!)
@@ -9405,7 +9405,7 @@ static void ShowExampleAppCustomRendering(bool* p_open)
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f);                             x += sz + spacing;  // Square with all rounded corners
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f, corners_tl_br);              x += sz + spacing;  // Square with two rounded corners
             draw_list->AddTriangleFilled(ImVec2(x+sz*0.5f,y), ImVec2(x+sz, y+sz-0.5f), ImVec2(x, y+sz-0.5f), col);  x += sz + spacing;  // Triangle
-            //draw_list->AddTriangleFilled(ImVec2(x+sz*0.2f,y), ImVec2(x, y+sz-0.5f), ImVec2(x+sz*0.4f, y+sz-0.5f), col); x += sz*0.4f + spacing; // Thin triangle
+            draw_list->AddTriangleFilled(ImVec2(x+sz*0.2f,y), ImVec2(x, y+sz-0.5f), ImVec2(x+sz*0.4f, y+sz-0.5f), col); x += sz*0.4f + spacing; // Thin triangle
             PathConcaveShape(draw_list, x, y, sz); draw_list->PathFillConcave(col);                                 x += sz + spacing;  // Concave shape
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + thickness), col);                             x += sz + spacing;  // Horizontal line (faster than AddLine, but only handle integer thickness)
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + thickness, y + sz), col);                             x += spacing * 2.0f;// Vertical line (faster than AddLine, but only handle integer thickness)

imgui_draw.cpp

@@ -789,8 +789,14 @@ if (USE_NEW_CODE)
         const float half_thickness_aa = half_thickness + AA_SIZE;
         const unsigned int first_vtx_idx = _VtxCurrentIdx;
 
+        // Declare temporary variables in outer scope. Declared without a default value would trigger static analyser, and doing it in inner-scope would be more wasteful.
+        float mlx, mly, mrx, mry;                                   // Left and right miters
+        float mlax = 0.0f, mlay = 0.0f, mrax = 0.0f, mray = 0.0f;   // Left and right miters including anti-aliasing
+        float b1x = 0.0f, b1y = 0.0f, b2x = 0.0f, b2y = 0.0f;       // First and second bevel point
+        float b1ax = 0.0f, b1ay = 0.0f, b2ax = 0.0f, b2ay = 0.0f;   // First and second bevel point including anti-aliasing
+
         float sqlen1 = 0.0f;
-        float dx1, dy1;
+        float dx1 = 0.0f, dy1 = 0.0f;
         if (closed)
         {
             dx1 = points[0].x - points[points_count - 1].x;
@@ -823,8 +829,6 @@ if (USE_NEW_CODE)
             }
 
             float miter_l_recip = dx1 * dy2 - dy1 * dx2;
-            float mlx, mly, mrx, mry;     // Left and right miters
-            float mlax, mlay, mrax, mray; // Left and right miters including anti-aliasing
             const bool bevel = (dx1 * dx2 + dy1 * dy2) > 1e-5f;
             if (ImFabs(miter_l_recip) > 1e-5f)
             {
@@ -869,8 +873,6 @@ if (USE_NEW_CODE)
             // The two bevel vertices if the angle is right or obtuse
             // miter_sign == 1, iff the outer (maybe bevelled) edge is on the right, -1 iff it is on the left
             int miter_sign = (miter_l_recip >= 0) - (miter_l_recip < 0);
-            float b1x, b1y, b2x, b2y;     // First and second bevel point
-            float b1ax, b1ay, b2ax, b2ay; // First and second bevel point including anti-aliasing
             if (bevel)
             {
                 // FIXME-OPT: benchmark if doing these computations only once in AA case saves cycles