Range-check argument to --bdfgen

diff --git a/bedstead.c b/bedstead.c
index 200d69f2daa3b948b67a1b26b8ff50c3686e080a..cc4fb64d5689223cd51c0a854793478ad65844ac 100644 (file)
--- a/bedstead.c
+++ b/bedstead.c
@@ -2977,6 +2977,11 @@ main(int argc, char **argv)
                        fprintf(stderr, "--bdfgen needs a numeric size\n");
                        return EXIT_FAILURE;
                }
+               if (u > INT_MAX) {
+                       fprintf(stderr, "--bdfgen size can be at most %d\n",
+                               INT_MAX);
+                       return EXIT_FAILURE;
+               }
                bdf_gen(u);
                return EXIT_SUCCESS;
        }