# 
# 
# patch "tester.cc"
#  from [dd449ab4d15a9b52be76469e0bf2f795bf292016]
#    to [a9368df02e7e77d3eaddde7080c20b3c302b571a]
# 
============================================================
--- tester.cc	dd449ab4d15a9b52be76469e0bf2f795bf292016
+++ tester.cc	a9368df02e7e77d3eaddde7080c20b3c302b571a
@@ -82,7 +82,7 @@ void setenv(char const * var, char const
 {
   _putenv_s(var, val);
 }
-void unsetenv(char const * var)
+int unsetenv(char const * var)
 {
   _putenv_s(var, "");
 }
@@ -96,7 +96,7 @@ void setenv(char const * var, char const
   memcpy(cp, s, len);
   putenv(cp);
 }
-void unsetenv(char const * var)
+int unsetenv(char const * var)
 {
   string tempstr = string(var) + "=";
   char const *s = tempstr.c_str();