expr: prevent stack overflow
commitef66afcaf2969c9780cd2560a99f23d2b3635ea0
authorSteve Bennett <steveb@workware.net.au>
Wed, 17 Jan 2018 22:41:24 +0000 (18 08:41 +1000)
committerSteve Bennett <steveb@workware.net.au>
Thu, 18 Jan 2018 01:01:15 +0000 (18 11:01 +1000)
treeb591f474513999558bd138fd8e32e3bdcbbf8c51
parent88c5e1f7e0341d4f16dbe54a8f94293a641a7850
expr: prevent stack overflow

Limit the depth of the expressions to a reasonable level to prevent
stack overflow

Signed-off-by: Steve Bennett <steveb@workware.net.au>
jim.c