From 73810d54d93b7f64d79059e288e7b10a4ff588a7 Mon Sep 17 00:00:00 2001
From: ievanpoikka <farzilal000@gmail.com>
Date: Sun, 21 Jun 2026 22:11:50 +0530
Subject: [PATCH] guard slices<3 in par_shapes_create_disk, fixed compiler
 warning -Walloc-size-larger-than

---
 src/external/par_shapes.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/external/par_shapes.h b/src/external/par_shapes.h
index d5309137b..adde5865f 100644
--- a/src/external/par_shapes.h
+++ b/src/external/par_shapes.h
@@ -715,6 +715,12 @@ void par_shapes_merge(par_shapes_mesh* dst, par_shapes_mesh const* src)
 par_shapes_mesh* par_shapes_create_disk(float radius, int slices,
     float const* center, float const* normal)
 {
+    // Guard against degenerate and invalid tessellation counts
+    // fixes compiler warning -Walloc-size-larger-than
+    // and a heap-buffer-overflow
+    if (slices < 3) {
+        return 0;
+    }
     par_shapes_mesh* mesh = PAR_CALLOC(par_shapes_mesh, 1);
     mesh->npoints = slices + 1;
     mesh->points = PAR_MALLOC(float, 3 * mesh->npoints);