From d0dd37f96fbe420cef84910d590e27da4be2cf9a Mon Sep 17 00:00:00 2001
From: Breno Cunha Queiroz <brenocq.br@gmail.com>
Date: Mon, 16 Feb 2026 18:23:32 +0100
Subject: [PATCH] fix: add assertion for n_ticks minimum when labels provided

---
 implot.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/implot.cpp b/implot.cpp
index f2f7f40c..76f23b07 100644
--- a/implot.cpp
+++ b/implot.cpp
@@ -2247,6 +2247,8 @@ void SetupAxisTicks(ImAxis idx, double v_min, double v_max, int n_ticks, const c
     ImPlotContext& gp = *GImPlot;
     IM_ASSERT_USER_ERROR(gp.CurrentPlot != nullptr && !gp.CurrentPlot->SetupLocked,
                          "Setup needs to be called after BeginPlot and before any setup locking functions (e.g. PlotX)!");
+    IM_ASSERT_USER_ERROR(labels == nullptr || n_ticks >= 2,
+                         "When providing custom labels, n_ticks must be at least 2!");
     n_ticks = n_ticks < 2 ? 2 : n_ticks;
     FillRange(gp.TempDouble1, n_ticks, v_min, v_max);
     SetupAxisTicks(idx, gp.TempDouble1.Data, n_ticks, labels, show_default);