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Tab Bar: Fixed buffer underflow in TabBarLayout, introduced by 4a57a982b (#3501, #3291)

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+ Link to CI actions added in 3be352f
This commit is contained in:
ocornut
2020-10-01 13:27:24 +02:00
parent 3be352fc80
commit 5f336ce8f8
2 changed files with 13 additions and 6 deletions
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15
imgui_widgets.cpp
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@ -6999,13 +6999,16 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
tab->IndexDuringLayout = (ImS8)tab_dst_n;
// We will need sorting if tabs have changed section (e.g. moved from one of Leading/Central/Trailing to another)
ImGuiTabItem* prev_tab = &tab_bar->Tabs[tab_dst_n - 1];
int curr_tab_section_n = (tab->Flags & ImGuiTabItemFlags_Leading) ? 0 : (tab->Flags & ImGuiTabItemFlags_Trailing) ? 2 : 1;
int prev_tab_section_n = (prev_tab->Flags & ImGuiTabItemFlags_Leading) ? 0 : (prev_tab->Flags & ImGuiTabItemFlags_Trailing) ? 2 : 1;
if (tab_dst_n > 0 && curr_tab_section_n == 0 && prev_tab_section_n != 0)
need_sort_by_section = true;
if (tab_dst_n > 0 && prev_tab_section_n == 2 && curr_tab_section_n != 2)
need_sort_by_section = true;
if (tab_dst_n > 0)
{
ImGuiTabItem* prev_tab = &tab_bar->Tabs[tab_dst_n - 1];
int prev_tab_section_n = (prev_tab->Flags & ImGuiTabItemFlags_Leading) ? 0 : (prev_tab->Flags & ImGuiTabItemFlags_Trailing) ? 2 : 1;
if (curr_tab_section_n == 0 && prev_tab_section_n != 0)
need_sort_by_section = true;
if (prev_tab_section_n == 2 && curr_tab_section_n != 2)
need_sort_by_section = true;
}
sections[curr_tab_section_n].TabCount++;
tab_dst_n++;