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diff --git a/src/pal/tests/palsuite/c_runtime/_putenv/test3/test3.cpp b/src/pal/tests/palsuite/c_runtime/_putenv/test3/test3.cpp
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+++ b/src/pal/tests/palsuite/c_runtime/_putenv/test3/test3.cpp
@@ -0,0 +1,102 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*=====================================================================
+**
+** Source: test3.c
+**
+** Purpose: Create environment variables that differ only in Case, and
+** verify that the BSD operating system treats the variables
+** differently.
+**
+**
+**===================================================================*/
+
+#include <palsuite.h>
+
+int __cdecl main(int argc, char **argv)
+{
+#if WIN32
+
+ return PASS;
+
+#else
+
+ const char* FirstVariable = "PalTestingEnvironmentVariable=The value";
+ const char* SecondVariable = "PALTESTINGEnvironmentVariable=Different value";
+ const char* FirstVarName = "PalTestingEnvironmentVariable";
+ const char* FirstVarValue = "The value";
+ char* result;
+
+
+ if (0 != (PAL_Initialize(argc, argv)))
+ {
+ return FAIL;
+ }
+
+ /* Use _putenv to set an environment variable. This ensures that the
+ variable we're testing on is always present.
+ */
+
+ if(_putenv(FirstVariable) != 0)
+ {
+ Fail("ERROR: _putenv failed to set an environment variable that "
+ "getenv will be using for testing.\n");
+ }
+
+
+ /* Call getenv -- ensure it doesn't return NULL and the string it returns
+ is the value we set above. Also make sure that each environment variable,
+ differing only by case, returns it's own value.
+ */
+
+ result = getenv(FirstVarName);
+ if(result == NULL)
+ {
+ Fail("ERROR: The result of getenv on a valid Environment Variable "
+ "was NULL, which indicates the environment varaible was not "
+ "found.\n");
+ }
+
+ if(strcmp(result, FirstVarValue) != 0)
+ {
+ Fail("ERROR: The value obtained by getenv() was not equal to the "
+ "correct value of the environment variable. The correct "
+ "value is '%s' and the function returned '%s'.\n",
+ FirstVarValue,
+ result);
+ }
+
+ /* Set the second environment variable, which only differs in Case */
+ if(_putenv(SecondVariable) != 0)
+ {
+ Fail("ERROR: _putenv failed to set an environment variable that "
+ "getenv will be using for testing.\n");
+ }
+
+ /* Verify that the environment variables
+ */
+
+ result = getenv(FirstVarName);
+ if(result == NULL)
+ {
+ Fail("ERROR: The result of getenv on a valid Environment Variable "
+ "was NULL, which indicates the environment varaible was not "
+ "found.\n");
+ }
+
+ if(strcmp(result, FirstVarValue) != 0)
+ {
+ Fail("ERROR: The value obtained by getenv() was not equal to the "
+ "correct value of the environment variable. The correct "
+ "value is '%s' and the function returned '%s'.\n",
+ FirstVarValue,
+ result);
+ }
+
+ PAL_Terminate();
+ return PASS;
+
+#endif
+}