34 lines
974 B
Diff
34 lines
974 B
Diff
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From 4f83478c88c2e05d6e8d79ca4557eb039354d2f3 Mon Sep 17 00:00:00 2001
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From: Chris Liddell <chris.liddell@artifex.com>
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Date: Thu, 27 Apr 2017 13:03:33 +0100
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Subject: [PATCH] Bug 697799: have .eqproc check its parameters
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The Ghostscript custom operator .eqproc was not check the number or type of
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the parameters it was given.
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Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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---
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psi/zmisc3.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/psi/zmisc3.c b/psi/zmisc3.c
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index 54b304246..37293ff4b 100644
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--- a/psi/zmisc3.c
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+++ b/psi/zmisc3.c
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@@ -56,6 +56,12 @@ zeqproc(i_ctx_t *i_ctx_p)
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ref2_t stack[MAX_DEPTH + 1];
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ref2_t *top = stack;
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+ if (ref_stack_count(&o_stack) < 2)
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+ return_error(gs_error_stackunderflow);
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+ if (!r_is_array(op - 1) || !r_is_array(op)) {
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+ return_error(gs_error_typecheck);
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+ }
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+
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make_array(&stack[0].proc1, 0, 1, op - 1);
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make_array(&stack[0].proc2, 0, 1, op);
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for (;;) {
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--
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2.11.0
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