From 45c693ad32f0ac9448aa455ee112b0ff13e91755 Mon Sep 17 00:00:00 2001
From: yuanjm <yuanjianmin@espressif.com>
Date: Fri, 27 Nov 2020 21:13:53 +0800
Subject: [PATCH] fix(newlib): fix environ is NULL

---
 components/newlib/src/reent_init.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/components/newlib/src/reent_init.c b/components/newlib/src/reent_init.c
index d95e05ac..5ccaf9e4 100644
--- a/components/newlib/src/reent_init.c
+++ b/components/newlib/src/reent_init.c
@@ -137,8 +137,15 @@ int esp_newlib_init(void)
     if (!_GLOBAL_REENT->_stdin)
         goto err_in;
 
+    environ = malloc(sizeof(char*));
+    if (!environ)
+        goto err_env;
+    environ[0] = NULL;
+
     return 0;
 
+err_env:
+    fclose(_GLOBAL_REENT->_stdin);
 err_in:
     fclose(_GLOBAL_REENT->_stderr);
 err_fail: