python · vstinner · Oct 13, 2021 · Oct 13, 2021
diff --git a/Include/cpython/pydebug.h b/Include/cpython/pydebug.h
@@ -29,7 +29,7 @@ PyAPI_DATA(int) Py_LegacyWindowsStdioFlag;
 /* this is a wrapper around getenv() that pays attention to
   Py_IgnoreEnvironmentFlag.  It should be used for getting variables like
   PYTHONPATH and PYTHONHOME from the environment */
-#define Py_GETENV(s) (Py_IgnoreEnvironmentFlag ? NULL : getenv(s))
+PyAPI_DATA(char*) Py_GETENV(const char *name);

 #ifdef __cplusplus
 }

@@ -249,6 +249,14 @@ _Py_GetGlobalVariablesAsDict(void)
 #undef SET_ITEM_STR
 }

+char*
+Py_GETENV(const char *name)
+{
+    if (Py_IgnoreEnvironmentFlag) {
+        return NULL;
+    }
+    return getenv(name);
+}

 /* --- PyStatus ----------------------------------------------- */