File 0002-TIntermediate-promoteConstantUnion-fix-conversion-to.patch of Package qt6-shadertools

From 75e3ed99c61b1d201498b5a7fbb6498f902344e0 Mon Sep 17 00:00:00 2001
From: Marius Hillenbrand <mhillen@linux.ibm.com>
Date: Wed, 10 Nov 2021 18:10:58 +0100
Subject: [PATCH 2/3] TIntermediate::promoteConstantUnion(): fix conversion to
 int8

The signedness of type char is implementation-defined in C++. The
conversion to (signed) int8 currently uses a cast to char, which is
undefined for negative values when the type char is implemented as
unsigned. Thus, fix to cast to "signed char", which has the intended
semantic on all implementations.

Fixes #2807
---
 .../glslang/glslang/MachineIndependent/Intermediate.cpp         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp b/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp
index 84b4c55..89538ea 100644
--- a/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp
+++ b/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp
@@ -3867,7 +3867,7 @@ TIntermTyped* TIntermediate::promoteConstantUnion(TBasicType promoteTo, TIntermC
         case EbtFloat16: PROMOTE(setDConst, double, Get); break; \
         case EbtFloat: PROMOTE(setDConst, double, Get); break; \
         case EbtDouble: PROMOTE(setDConst, double, Get); break; \
-        case EbtInt8: PROMOTE(setI8Const, char, Get); break; \
+        case EbtInt8: PROMOTE(setI8Const, signed char, Get); break; \
         case EbtInt16: PROMOTE(setI16Const, short, Get); break; \
         case EbtInt: PROMOTE(setIConst, int, Get); break; \
         case EbtInt64: PROMOTE(setI64Const, long long, Get); break; \
-- 
2.34.1