From 4f83478c88c2e05d6e8d79ca4557eb039354d2f3 Mon Sep 17 00:00:00 2001 From: Chris Liddell Date: Thu, 27 Apr 2017 13:03:33 +0100 Subject: [PATCH 1/2] Bug 697799: have .eqproc check its parameters The Ghostscript custom operator .eqproc was not check the number or type of the parameters it was given. --- psi/zmisc3.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/psi/zmisc3.c b/psi/zmisc3.c index 54b3042..37293ff 100644 --- a/psi/zmisc3.c +++ b/psi/zmisc3.c @@ -56,6 +56,12 @@ zeqproc(i_ctx_t *i_ctx_p) ref2_t stack[MAX_DEPTH + 1]; ref2_t *top = stack; + if (ref_stack_count(&o_stack) < 2) + return_error(e_stackunderflow); + if (!r_is_array(op - 1) || !r_is_array(op)) { + return_error(e_typecheck); + } + make_array(&stack[0].proc1, 0, 1, op - 1); make_array(&stack[0].proc2, 0, 1, op); for (;;) { -- 2.1.4