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Cast this to (void*) in zero-clearing memset calls to fix -Wnontrivial-memcall (#9247, #8295, #8129, #8135)

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Clang 20+ warns on memset(this, ...) for non-trivially copyable types via -Wnontrivial-memcall.
Should separately investigate -Wnonontrivial-memaccess vs -Wnonontrivial-memcall.
This commit is contained in:
Laurenz Altenmüller
2026-02-16 14:36:36 +01:00
committed by ocornut
parent eaa32bb787
commit fbe973a8d0
6 changed files with 55 additions and 55 deletions
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12
imgui_draw.cpp
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@@ -392,7 +392,7 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
ImDrawListSharedData::ImDrawListSharedData()
{
memset(this, 0, sizeof(*this));
memset((void*)this, 0, sizeof(*this));
InitialFringeScale = 1.0f;
for (int i = 0; i < IM_COUNTOF(ArcFastVtx); i++)
{
@@ -424,7 +424,7 @@ void ImDrawListSharedData::SetCircleTessellationMaxError(float max_error)
ImDrawList::ImDrawList(ImDrawListSharedData* shared_data)
{
memset(this, 0, sizeof(*this));
memset((void*)this, 0, sizeof(*this));
_SetDrawListSharedData(shared_data);
}
@@ -2417,7 +2417,7 @@ void ImGui::ShadeVertsTransformPos(ImDrawList* draw_list, int vert_start_idx, in
// FIXME-NEWATLAS: Oversample specification could be more dynamic. For now, favoring automatic selection.
ImFontConfig::ImFontConfig()
{
memset(this, 0, sizeof(*this));
memset((void*)this, 0, sizeof(*this));
FontDataOwnedByAtlas = true;
OversampleH = 0; // Auto == 1 or 2 depending on size
OversampleV = 0; // Auto == 1
@@ -2641,7 +2641,7 @@ static const ImVec2 FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[ImGuiMouseCursor_COUNT][3
ImFontAtlas::ImFontAtlas()
{
memset(this, 0, sizeof(*this));
memset((void*)this, 0, sizeof(*this));
TexDesiredFormat = ImTextureFormat_RGBA32;
TexGlyphPadding = 1;
TexMinWidth = 512;
@@ -5134,7 +5134,7 @@ void ImFontGlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)
ImFontBaked::ImFontBaked()
{
memset(this, 0, sizeof(*this));
memset((void*)this, 0, sizeof(*this));
FallbackGlyphIndex = -1;
}
@@ -5151,7 +5151,7 @@ void ImFontBaked::ClearOutputData()
ImFont::ImFont()
{
memset(this, 0, sizeof(*this));
memset((void*)this, 0, sizeof(*this));
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
Scale = 1.0f;
#endif