Detect excessively larhe files.

diff --git a/shredtree.c b/shredtree.c
index 9c81542967f0de62e4e0dd20b0cf86011e7f1ce0..e74466da86c60e5b8eca1b87fba6dfd6244117d2 100644 (file)
--- a/shredtree.c
+++ b/shredtree.c
@@ -181,6 +181,12 @@ int shredfile(struct filehdr_t *file,
        int     braceline = 0;
 
        linecount++;
+       if (linecount >= MAX_LINENUM)
+       {
+           fprintf(stderr, "comparator: %s too large, only first %d lines will be compared.\n", file->name, MAX_LINENUM-1);
+           break;
+       }
+
        if (remove_braces)
        {
            char *cp;