grep: add a test asserting that --perl-regexp dies when !PCRE

diff --git a/grep.c b/grep.c
index 56ef0ecbfffd8531a5b88585efc0c9097e182ed6..47cee4506703f5dd2b7db84e09dae93adf99fbaf 100644 (file)
--- a/grep.c
+++ b/grep.c
@@ -1171,7 +1171,7 @@ static void show_line(struct grep_opt *opt, char *bol, char *eol,
        }
        if (opt->linenum) {
                char buf[32];
-               snprintf(buf, sizeof(buf), "%d", lno);
+               xsnprintf(buf, sizeof(buf), "%d", lno);
                output_color(opt, buf, strlen(buf), opt->color_lineno);
                output_sep(opt, sign);
        }
@@ -1653,7 +1653,7 @@ static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int colle
                                     opt->color_filename);
                        output_sep(opt, ':');
                }
-               snprintf(buf, sizeof(buf), "%u\n", count);
+               xsnprintf(buf, sizeof(buf), "%u\n", count);
                opt->output(opt, buf, strlen(buf));
                return 1;
        }