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From: Chris Liddell <chris.liddell@artifex.com>
Date: Tue, 21 Aug 2018 15:42:45 +0000 (+0100)
Subject: Bug 699656: Handle LockDistillerParams not being a boolean
X-Git-Tag: ghostpdl-9.24rc1~23
X-Git-Url: http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff_plain;h=c3476dde
Bug 699656: Handle LockDistillerParams not being a boolean
This caused a function call commented as "Can't fail" to fail, and resulted
in memory correuption and a segfault.
---
diff --git a/devices/vector/gdevpdfp.c b/devices/vector/gdevpdfp.c
index e942682..7c58af7 100644
--- a/devices/vector/gdevpdfp.c
+++ b/devices/vector/gdevpdfp.c
@@ -364,7 +364,7 @@ gdev_pdf_put_params_impl(gx_device * dev, const gx_device_pdf * save_dev, gs_par
* LockDistillerParams is read again, and reset if necessary, in
* psdf_put_params.
*/
- ecode = param_read_bool(plist, "LockDistillerParams", &locked);
+ ecode = param_read_bool(plist, (param_name = "LockDistillerParams"), &locked);
if (ecode < 0)
param_signal_error(plist, param_name, ecode);
diff --git a/psi/iparam.c b/psi/iparam.c
index 68c20d4..0279455 100644
--- a/psi/iparam.c
+++ b/psi/iparam.c
@@ -822,10 +822,11 @@ static int
ref_param_read_signal_error(gs_param_list * plist, gs_param_name pkey, int code)
{
iparam_list *const iplist = (iparam_list *) plist;
- iparam_loc loc;
+ iparam_loc loc = {0};
- ref_param_read(iplist, pkey, &loc, -1); /* can't fail */
- *loc.presult = code;
+ ref_param_read(iplist, pkey, &loc, -1);
+ if (loc.presult)
+ *loc.presult = code;
switch (ref_param_read_get_policy(plist, pkey)) {
case gs_param_policy_ignore:
return 0;
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