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Fixes for PVS Studio and MSVC static analyzers. Using a macro to suppress single-use MSVC false positives. (#3938, #4073)

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ocornut
2021-04-29 18:11:22 +02:00
parent d28535f351
commit 89162a04f4
7 changed files with 35 additions and 16 deletions
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9
imgui.cpp
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@ -816,8 +816,9 @@ CODE
#if defined(_MSC_VER) && _MSC_VER >= 1922 // MSVC 2019 16.2 or later
#pragma warning (disable: 5054) // operator '|': deprecated between enumerations of different types
#endif
#pragma warning (disable: 26451) // Arithmetic overflow : Using operator 'xxx' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator 'xxx' to avoid overflow(io.2).
#pragma warning (disable: 26812) // The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3). [MSVC Static Analyzer)
#pragma warning (disable: 26451) // [Static Analyzer] Arithmetic overflow : Using operator 'xxx' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator 'xxx' to avoid overflow(io.2).
#pragma warning (disable: 26495) // [Static Analyzer] Variable 'XXX' is uninitialized. Always initialize a member variable (type.6).
#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
#endif
// Clang/GCC warnings with -Weverything
@ -4475,6 +4476,7 @@ void ImGui::Render()
for (int n = 0; n != g.Windows.Size; n++)
{
ImGuiWindow* window = g.Windows[n];
IM_MSVC_WARNING_SUPPRESS(6011); // Static Analysis false positive "warning C6011: Dereferencing NULL pointer 'window'"
if (IsWindowActiveAndVisible(window) && (window->Flags & ImGuiWindowFlags_ChildWindow) == 0 && window != windows_to_render_top_most[0] && window != windows_to_render_top_most[1])
AddRootWindowToDrawData(window);
}
@ -4576,9 +4578,9 @@ static void FindHoveredWindow()
continue;
}
IM_ASSERT(window != NULL); // fix C28182
if (hovered_window == NULL)
hovered_window = window;
IM_MSVC_WARNING_SUPPRESS(28182); // [Static Analyzer] Dereferencing NULL pointer.
if (hovered_window_ignoring_moving_window == NULL && (!g.MovingWindow || window->RootWindow != g.MovingWindow->RootWindow))
hovered_window_ignoring_moving_window = window;
if (hovered_window && hovered_window_ignoring_moving_window)
@ -9714,6 +9716,7 @@ void ImGui::NavUpdateWindowingOverlay()
for (int n = g.WindowsFocusOrder.Size - 1; n >= 0; n--)
{
ImGuiWindow* window = g.WindowsFocusOrder[n];
IM_MSVC_WARNING_SUPPRESS(6011); // Static Analysis false positive "warning C6011: Dereferencing NULL pointer 'window'"
if (!IsWindowNavFocusable(window))
continue;
const char* label = window->Name;