diff --git a/.gitignore b/.gitignore
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,8 @@
 .sw?
 #OS X specific files.
 .DS_store
+# Ignore core files that might accidentally end up in the repository.
+*core
 
 # Ignore the user specified CMake presets in subproject directories.
 /*/CMakeUserPresets.json