Fix off-by-one in IsCopperLayer

Fixes https://gitlab.com/kicad/code/kicad/-/issues/19211
11 months ago · 38c00c5d58
1 changed files with 1 additions and 1 deletions
--- a/include/layer_ids.h
+++ b/include/layer_ids.h
@ -530,7 +530,7 @@ inline bool IsPcbLayer( int aLayer )
 */
 inline bool IsCopperLayer( int aLayerId )
 {
-    return !( aLayerId & 1 ) && aLayerId <= PCB_LAYER_ID_COUNT && aLayerId >= 0;
+    return !( aLayerId & 1 ) && aLayerId < PCB_LAYER_ID_COUNT && aLayerId >= 0;
 }

 /**