https://github.com/sga-sc created 
https://github.com/llvm/llvm-project/pull/182260

According to RISC-V ELF psABI, Section 4.3 (C/C++ Type Representations) "char 
is unsigned".

This patch makes plain `char` unsigned by default on RISC-V. Also this fixes 
TestConstStaticIntegralMember.py on RISC-V

>From ca095ab06fb439e2b6174c3584bff3f3861b5d66 Mon Sep 17 00:00:00 2001
From: Georgiy Samoylov <[email protected]>
Date: Wed, 18 Feb 2026 19:02:55 +0300
Subject: [PATCH] [lldb][RISCV] Make char an unsigned type for RISC-V by
 default

---
 lldb/source/Utility/ArchSpec.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lldb/source/Utility/ArchSpec.cpp b/lldb/source/Utility/ArchSpec.cpp
index dfe4351f0c45b..7a6fed11677fc 100644
--- a/lldb/source/Utility/ArchSpec.cpp
+++ b/lldb/source/Utility/ArchSpec.cpp
@@ -721,6 +721,8 @@ bool ArchSpec::CharIsSignedByDefault() const {
   case llvm::Triple::ppc64:
     return m_triple.isOSDarwin();
 
+  case llvm::Triple::riscv64:
+  case llvm::Triple::riscv32:
   case llvm::Triple::ppc64le:
   case llvm::Triple::systemz:
   case llvm::Triple::xcore:

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