Assertion error in the `Metrics/Debugger` window

[achabense]

Version/Branch of Dear ImGui:

Version 1.92.2

Back-ends:

imgui_impl_dx9.cpp + imgui_impl_win32.cpp

Compiler, OS:

Any

Full config/build information:

No response

Details:

If the .ini file is disabled, clicking Metrics/Debugger / Settings / Settings unpacked data's input field will result in an assertion error.

Screenshots/Video:

Minimal, Complete and Verifiable Example code:

ImGui::GetIO().IniFilename = nullptr;

[ocornut]

Thank for your report.
This isn't specific to settings and may be reproduced with:

ImGui::InputText("Buf", "", 0);

In theory we don't allow buf_size==0, but it makes sense when displaying a text blob from a varying source, so it makes sense to specifically allow empty string + buf_size==0.

Pushed fix: 55cbc66.

[ocornut]

Added basic test ocornut/imgui_test_engine@6e7b4c5