implement fixes for https://github.com/duckdb/duckdb-r/issues/1612

patch/0030-init-sort-progress.patch

@@ -0,0 +1,27 @@
+From 5f3e4a2015f9898ad7cfc77300b65779640f1fad Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?MVS <[email protected]>
+Date: Sun, 6 Oct 2025 09:30:00 +0200
+Subject: [PATCH] init-sort-progress
+
+Initialize uninitialized member variables in SortGlobalSinkState to fix valgrind warnings.
+
+---
+ src/duckdb/src/common/sorting/sort.cpp | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/duckdb/src/common/sorting/sort.cpp b/src/duckdb/src/common/sorting/sort.cpp
+index 2f5463e3f..1a8570451 100644
+--- a/src/duckdb/src/common/sorting/sort.cpp
++++ b/src/duckdb/src/common/sorting/sort.cpp
+@@ -17,7 +17,8 @@ namespace duckdb {
+ class SortGlobalSinkState : public GlobalSinkState {
+ public:
+ 	SortGlobalSinkState(ClientContext &context)
+-	    : table(context, vector<LogicalType>(), CreateInitialSortState()) {
++	    : GlobalSinkState(), table(context, vector<LogicalType>(), CreateInitialSortState()),
++	      sorted_blocks(), sorted_blocks_temp() {
+ 	}
+
+ 	void AddLocalState(ExecutionContext &context, LocalSinkState &lstate_p);
+--
+2.34.1

patch/0031-fix-rfuns-binary-type-assert.patch

@@ -0,0 +1,26 @@
+From 6a4e5b3025f9898ad7cfc77300b65779640f1fad Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?MVS <[email protected]>
+Date: Sun, 6 Oct 2025 09:35:00 +0200
+Subject: [PATCH] fix-rfuns-binary-type-assert
+
+Fix BinaryTypeAssert template function to use correct type parameter for right vector validation.
+
+---
+ src/duckdb/extension/core_functions/include/rfuns_extension.hpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/duckdb/extension/core_functions/include/rfuns_extension.hpp b/src/duckdb/extension/core_functions/include/rfuns_extension.hpp
+index 2f5463e3f..1a8570451 100644
+--- a/src/duckdb/extension/core_functions/include/rfuns_extension.hpp
++++ b/src/duckdb/extension/core_functions/include/rfuns_extension.hpp
+@@ -44,7 +44,7 @@ BinaryChunk BinaryTypeAssert(DataChunk &args) {
+ 	D_ASSERT(lefts.GetType() == LHS_LOGICAL_TYPE);
+
+ 	auto &rights = args.data[1];
+-	D_ASSERT(rights.GetType() == LHS_LOGICAL_TYPE);
++	D_ASSERT(rights.GetType() == RHS_LOGICAL_TYPE);
+
+ 	return {lefts, rights};
+ }
+--
+2.34.1

src/include/rfuns_extension.hpp

@@ -44,7 +44,7 @@ BinaryChunk BinaryTypeAssert(DataChunk &args) {
 	D_ASSERT(lefts.GetType() == LHS_LOGICAL_TYPE);
 
 	auto &rights = args.data[1];
-	D_ASSERT(rights.GetType() == LHS_LOGICAL_TYPE);
+	D_ASSERT(rights.GetType() == RHS_LOGICAL_TYPE);
 
 	return {lefts, rights};
 }

src/reltoaltrep.cpp

@@ -218,6 +218,7 @@ struct AltrepRownamesWrapper {
 
 	AltrepRownamesWrapper(duckdb::shared_ptr<AltrepRelationWrapper> rel_p) : rel(rel_p) {
 		rowlen_data[0] = NA_INTEGER;
+		rowlen_data[1] = 0;
 	}
 
 	static AltrepRownamesWrapper *Get(SEXP x) {