From 59b51654538a46caad4995d54d63a3ed05ab5d89 Mon Sep 17 00:00:00 2001
From: jreichel-nvidia <43646584+jreichel-nvidia@users.noreply.github.com>
Date: Fri, 7 Oct 2022 21:26:48 +0200
Subject: [PATCH] Fix PSD import on ARM. (#3589)

The code assumes "char" is "signed char" (as on x86), but on ARM "char" is
"unsigned char".

Co-authored-by: Joachim Reichel <joachim.reichel@posteo.de>
---
 src/psd.imageio/psdinput.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/psd.imageio/psdinput.cpp b/src/psd.imageio/psdinput.cpp
index 27436b2325..9d137f06ef 100644
--- a/src/psd.imageio/psdinput.cpp
+++ b/src/psd.imageio/psdinput.cpp
@@ -2041,7 +2041,8 @@ PSDInput::decompress_packbits(const char* src, char* dst,
     int length;
 
     while (src_remaining > 0 && dst_remaining > 0) {
-        header = *src++;
+        header = *reinterpret_cast<const signed char*>(src);
+        src++;
         src_remaining--;
 
         if (header == 128)