From 201419c646dca3e746c44fa662d19a6532c62e49 Mon Sep 17 00:00:00 2001
From: Kritik Bhimani <bhimanikritik@gmail.com>
Date: Sun, 13 Nov 2022 19:05:06 +0530
Subject: [PATCH] Fix MSVC compiler errors (#3742) (#3746)

---
 docs/CONTRIBUTORS   | 1 +
 src/V3Os.cpp        | 2 +-
 src/V3TraceDecl.cpp | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/docs/CONTRIBUTORS b/docs/CONTRIBUTORS
index 1c78172f7..e072cacb0 100644
--- a/docs/CONTRIBUTORS
+++ b/docs/CONTRIBUTORS
@@ -65,6 +65,7 @@ Kamil Rakoczy
 Kanad Kanhere
 Keith Colbert
 Kevin Kiningham
+Kritik Bhimani
 Krzysztof Bieganski
 Kuba Ober
 Larry Doolittle
diff --git a/src/V3Os.cpp b/src/V3Os.cpp
index 32d78f09c..8088e120f 100644
--- a/src/V3Os.cpp
+++ b/src/V3Os.cpp
@@ -78,7 +78,7 @@ VL_DEFINE_DEBUG_FUNCTIONS;
 string V3Os::getenvStr(const string& envvar, const string& defaultValue) {
 #if defined(_MSC_VER)
     // Note: MinGW does not offer _dupenv_s
-    const char* const envvalue = nullptr;
+    const char* envvalue = nullptr;
     _dupenv_s(&envvalue, nullptr, envvar.c_str());
     if (envvalue != nullptr) {
         const std::string result{envvalue};
diff --git a/src/V3TraceDecl.cpp b/src/V3TraceDecl.cpp
index aab284fc3..b8a5615e6 100644
--- a/src/V3TraceDecl.cpp
+++ b/src/V3TraceDecl.cpp
@@ -285,7 +285,7 @@ private:
                 // Recurse into data type of the signal. The visit methods will add AstTraceDecls.
                 iterate(m_traVscp->varp()->dtypep()->skipRefToEnump());
                 // Cleanup
-                if (m_traValuep) VL_DO_DANGLING(m_traValuep->deleteTree(), m_traValuep);
+                if (m_traValuep) VL_DO_CLEAR(m_traValuep->deleteTree(), m_traValuep = nullptr);
             }
         }
         pathAdjustor.unwind();