t4200: demonstrate rerere segfault on specially crafted merge

diff --git a/t/check-non-portable-shell.pl b/t/check-non-portable-shell.pl
index 03dc9d28525730cdf57c74d13cab22da59dcdfbd..e07f0284372ec25c91fd62f0d136c31d80263a0d 100755 (executable)
--- a/t/check-non-portable-shell.pl
+++ b/t/check-non-portable-shell.pl
@@ -21,6 +21,7 @@ sub err {
        /^\s*declare\s+/ and err 'arrays/declare not portable';
        /^\s*[^#]\s*which\s/ and err 'which is not portable (please use type)';
        /\btest\s+[^=]*==/ and err '"test a == b" is not portable (please use =)';
+       /\bwc -l.*"\s*=/ and err '`"$(wc -l)"` is not portable (please use test_line_count)';
        /\bexport\s+[A-Za-z0-9_]*=/ and err '"export FOO=bar" is not portable (please use FOO=bar && export FOO)';
        # this resets our $. for each file
        close ARGV if eof;