From 732f6b08c8b86c7cbdf7593cf820f55b6d9d7402 Mon Sep 17 00:00:00 2001
From: Igor Sfiligoi <isfiligoi@sdsc.edu>
Date: Fri, 28 Apr 2023 09:52:38 -0700
Subject: [PATCH 1/2] Fix cleanup in PropStack destructor - was leaking memory

---
 src/unifrac_internal.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/unifrac_internal.cpp b/src/unifrac_internal.cpp
index 087f575..f068ca9 100644
--- a/src/unifrac_internal.cpp
+++ b/src/unifrac_internal.cpp
@@ -88,7 +88,7 @@ PropStack<TFloat>::PropStack(uint32_t vecsize)
 template<class TFloat>
 PropStack<TFloat>::~PropStack() {
     // drain stack
-    for(unsigned int i = 0; i < prop_stack.size(); i++) {
+    while (!prop_stack.empty()) {
         TFloat *vec = prop_stack.top();
         prop_stack.pop();
         free(vec);

From 83264a7bf005170cbda2ef8907255a45bbad1034 Mon Sep 17 00:00:00 2001
From: Igor Sfiligoi <isfiligoi@sdsc.edu>
Date: Fri, 28 Apr 2023 10:10:48 -0700
Subject: [PATCH 2/2] Fix cleanup in linked_sparse_transposed destructor - was
 leaking memory

---
 src/biom_subsampled.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/biom_subsampled.cpp b/src/biom_subsampled.cpp
index 28757f2..5d154bd 100644
--- a/src/biom_subsampled.cpp
+++ b/src/biom_subsampled.cpp
@@ -73,6 +73,7 @@ linked_sparse_transposed::linked_sparse_transposed(sparse_data &other)
 
 linked_sparse_transposed::~linked_sparse_transposed() {
     if(obs_data_resident != NULL) {
+        for (uint32_t i=0; i<n_obs; i++) free(obs_data_resident[i]);
         free(obs_data_resident);
         obs_data_resident = NULL;
     }