From: Nabil Ghodbane <nabil.ghodbane@cea.fr>
Date: Thu, 4 May 2023 14:45:45 +0000 (+0200)
Subject: spns #33658: in case environment variable does not exist, getenv returns nullptr... 
X-Git-Tag: V9_11_0a1^0
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=refs%2Ftlpr%2F3%2Fhead;p=modules%2Fkernel.git

spns #33658: in case environment variable does not exist, getenv returns nullptr, which triggers an exception

Test rewrite parameter first, then check if environment variable is nullptr, and finally check if environment variable exists but is empty

Useful for setting MeshGems license
---

diff --git a/src/Basics/Basics_Utils.cxx b/src/Basics/Basics_Utils.cxx
index 1725a319c..63fe64c69 100644
--- a/src/Basics/Basics_Utils.cxx
+++ b/src/Basics/Basics_Utils.cxx
@@ -175,7 +175,7 @@ namespace Kernel_Utils
   {
     std::stringstream sstr;
     sstr<<name<<'='<<value;
-    if(rewrite || std::string(getenv(name)).length() == 0)
+    if(rewrite || getenv(name) == nullptr || std::string(getenv(name)).length() == 0)
       return _putenv(sstr.str().c_str());
     else return -1;
   }