From a21935b1de220dd00e5b888fa3d50c0b490a4517 Mon Sep 17 00:00:00 2001
From: Bo Peng <ben.bob@gmail.com>
Date: Fri, 30 Aug 2024 22:11:46 -0500
Subject: [PATCH] fix another instance of undefined ssize_t

---
 src/mutant_vector.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mutant_vector.h b/src/mutant_vector.h
index 859591c5..7c4f0b56 100644
--- a/src/mutant_vector.h
+++ b/src/mutant_vector.h
@@ -30,6 +30,9 @@
 
 #  include <map>
 #  include <iostream>
+#ifdef _MSC_VER
+typedef SSIZE_T ssize_t;
+#endif
 
 namespace simuPOP {