Warning fixes (now testing with Clang)

imgui.cpp

@@ -216,6 +216,11 @@
  - optimization: specialize for height based clipping first (assume widgets never go up + height tests before width tests?)
 */
 
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_WARNINGS
+#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
+#endif
+
 #include "imgui.h"
 #include <ctype.h>      // toupper
 #include <math.h>       // sqrt
@@ -224,10 +229,6 @@
 #include <string.h>     // memset
 #include <new>          // new (ptr)
 
-#ifdef _MSC_VER
-#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
-#endif
-
 //-------------------------------------------------------------------------
 // Forward Declarations
 //-------------------------------------------------------------------------
@@ -386,7 +387,7 @@ const float PI = 3.14159265358979323846f;
 // Math bits
 // We are keeping those static in the .cpp file so as not to leak them outside, in the case the user has implicit cast operators between ImVec2 and its own types.
 static inline ImVec2 operator*(const ImVec2& lhs, const float rhs)              { return ImVec2(lhs.x*rhs, lhs.y*rhs); }
-static inline ImVec2 operator/(const ImVec2& lhs, const float rhs)              { return ImVec2(lhs.x/rhs, lhs.y/rhs); }
+//static inline ImVec2 operator/(const ImVec2& lhs, const float rhs)            { return ImVec2(lhs.x/rhs, lhs.y/rhs); }
 static inline ImVec2 operator+(const ImVec2& lhs, const ImVec2& rhs)            { return ImVec2(lhs.x+rhs.x, lhs.y+rhs.y); }
 static inline ImVec2 operator-(const ImVec2& lhs, const ImVec2& rhs)            { return ImVec2(lhs.x-rhs.x, lhs.y-rhs.y); }
 static inline ImVec2 operator*(const ImVec2& lhs, const ImVec2 rhs)             { return ImVec2(lhs.x*rhs.x, lhs.y*rhs.y); }
@@ -394,7 +395,7 @@ static inline ImVec2 operator/(const ImVec2& lhs, const ImVec2 rhs)
 static inline ImVec2& operator+=(ImVec2& lhs, const ImVec2& rhs)                { lhs.x += rhs.x; lhs.y += rhs.y; return lhs; }
 static inline ImVec2& operator-=(ImVec2& lhs, const ImVec2& rhs)                { lhs.x -= rhs.x; lhs.y -= rhs.y; return lhs; }
 static inline ImVec2& operator*=(ImVec2& lhs, const float rhs)                  { lhs.x *= rhs; lhs.y *= rhs; return lhs; }
-static inline ImVec2& operator/=(ImVec2& lhs, const float rhs)                  { lhs.x /= rhs; lhs.y /= rhs; return lhs; }
+//static inline ImVec2& operator/=(ImVec2& lhs, const float rhs)                { lhs.x /= rhs; lhs.y /= rhs; return lhs; }
 
 static inline int    ImMin(int lhs, int rhs)                                    { return lhs < rhs ? lhs : rhs; }
 static inline int    ImMax(int lhs, int rhs)                                    { return lhs >= rhs ? lhs : rhs; }
@@ -406,7 +407,7 @@ static inline float  ImClamp(float f, float mn, float mx)
 static inline ImVec2 ImClamp(const ImVec2& f, const ImVec2& mn, ImVec2 mx)      { return ImVec2(ImClamp(f.x,mn.x,mx.x), ImClamp(f.y,mn.y,mx.y)); }
 static inline float  ImSaturate(float f)                                        { return (f < 0.0f) ? 0.0f : (f > 1.0f) ? 1.0f : f; }
 static inline float  ImLerp(float a, float b, float t)                          { return a + (b - a) * t; }
-static inline ImVec2 ImLerp(const ImVec2& a, const ImVec2& b, float t)          { return a + (b - a) * t; }
+//static inline ImVec2 ImLerp(const ImVec2& a, const ImVec2& b, float t)        { return a + (b - a) * t; }
 static inline ImVec2 ImLerp(const ImVec2& a, const ImVec2& b, const ImVec2& t)  { return ImVec2(a.x + (b.x - a.x) * t.x, a.y + (b.y - a.y) * t.y); }
 static inline float  ImLength(const ImVec2& lhs)                                { return sqrt(lhs.x*lhs.x + lhs.y*lhs.y); }
 
@@ -2577,7 +2578,6 @@ static ImVec2* GetStyleVarVec2Addr(ImGuiStyleVar idx)
 
 void ImGui::PushStyleVar(ImGuiStyleVar idx, float val)
 {
-    ImGuiState& g = GImGui;
     ImGuiWindow* window = GetCurrentWindow();
 
     float* pvar = GetStyleVarFloatAddr(idx);
@@ -2592,7 +2592,6 @@ void ImGui::PushStyleVar(ImGuiStyleVar idx, float val)
 
 void ImGui::PushStyleVar(ImGuiStyleVar idx, const ImVec2& val)
 {
-    ImGuiState& g = GImGui;
     ImGuiWindow* window = GetCurrentWindow();
 
     ImVec2* pvar = GetStyleVarVec2Addr(idx);
@@ -2606,7 +2605,6 @@ void ImGui::PushStyleVar(ImGuiStyleVar idx, const ImVec2& val)
 
 void ImGui::PopStyleVar()
 {
-    ImGuiState& g = GImGui;
     ImGuiWindow* window = GetCurrentWindow();
 
     ImGuiStyleMod& backup = window->DC.StyleModifiers.back();