| From 4f83478c88c2e05d6e8d79ca4557eb039354d2f3 Mon Sep 17 00:00:00 2001 |
| From: Chris Liddell <chris.liddell@artifex.com> |
| Date: Thu, 27 Apr 2017 13:03:33 +0100 |
| Subject: [PATCH] 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. |
| |
| Signed-off-by: Peter Korsgaard <peter@korsgaard.com> |
| --- |
| psi/zmisc3.c | 6 ++++++ |
| 1 file changed, 6 insertions(+) |
| |
| diff --git a/psi/zmisc3.c b/psi/zmisc3.c |
| index 54b304246..37293ff4b 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(gs_error_stackunderflow); |
| + if (!r_is_array(op - 1) || !r_is_array(op)) { |
| + return_error(gs_error_typecheck); |
| + } |
| + |
| make_array(&stack[0].proc1, 0, 1, op - 1); |
| make_array(&stack[0].proc2, 0, 1, op); |
| for (;;) { |
| -- |
| 2.11.0 |
| |
