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From d504abaf2b0a514193f52df42098bc16de4718b2 Mon Sep 17 00:00:00 2001
From: Oz <rik20@live.it>
Date: Fri, 17 Jan 2025 21:23:59 +0100
Subject: [PATCH] Fix int8_t storage in BitPropVariant on Arm architectures
Upstream-Status: Backport [https://github.com/rikyoz/bit7z/commit/d504abaf2b0a514193f52df42098bc16de4718b2]
Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
include/bit7z/bitwindows.hpp | 4 ++++
src/bitpropvariant.cpp | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/include/bit7z/bitwindows.hpp b/include/bit7z/bitwindows.hpp
index 5849b956..2f29a989 100644
--- a/include/bit7z/bitwindows.hpp
+++ b/include/bit7z/bitwindows.hpp
@@ -126,7 +126,11 @@ struct PROPVARIANT {
WORD wReserved2;
WORD wReserved3;
union {
+#if defined( __arm__ ) || defined( __aarch64__ )
+ signed char cVal;
+#else
char cVal;
+#endif
unsigned char bVal;
short iVal;
unsigned short uiVal;
diff --git a/src/bitpropvariant.cpp b/src/bitpropvariant.cpp
index 1e7f094f..642e1268 100644
--- a/src/bitpropvariant.cpp
+++ b/src/bitpropvariant.cpp
@@ -157,7 +157,7 @@ BitPropVariant::BitPropVariant( uint64_t value ) noexcept: PROPVARIANT() {
BitPropVariant::BitPropVariant( int8_t value ) noexcept: PROPVARIANT() {
vt = VT_I1;
wReserved1 = 0;
- cVal = static_cast< char >( value );
+ cVal = static_cast< decltype(cVal) >( value );
}
BitPropVariant::BitPropVariant( int16_t value ) noexcept: PROPVARIANT() {
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