bpo-34485: Add _PyCoreConfig.stdio_encoding (GH-8881)

* Add stdio_encoding and stdio_errors fields to _PyCoreConfig.
* Add unit tests on stdio_encoding and stdio_errors.

2 files changed, 15 insertions, 0 deletions

diff --git a/Include/coreconfig.h b/Include/coreconfig.h
index b2799075f9..ffba306a9f 100644
--- a/Include/coreconfig.h
+++ b/Include/coreconfig.h
@@ -203,6 +203,18 @@ typedef struct {
        If set to -1 (default), it is set to !Py_UnbufferedStdioFlag. */
     int buffered_stdio;
 
+    /* Encoding of sys.stdin, sys.stdout and sys.stderr.
+       Value set from PYTHONIOENCODING environment variable and
+       Py_SetStandardStreamEncoding() function.
+       See also 'stdio_errors' attribute. */
+    char *stdio_encoding;
+
+    /* Error handler of sys.stdin and sys.stdout.
+       Value set from PYTHONIOENCODING environment variable and
+       Py_SetStandardStreamEncoding() function.
+       See also 'stdio_encoding' attribute. */
+    char *stdio_errors;
+
 #ifdef MS_WINDOWS
     /* If greater than 1, use the "mbcs" encoding instead of the UTF-8
        encoding for the filesystem encoding.
diff --git a/Include/pylifecycle.h b/Include/pylifecycle.h
index 2029827702..b96db1e38b 100644
--- a/Include/pylifecycle.h
+++ b/Include/pylifecycle.h
@@ -179,6 +179,9 @@ PyAPI_FUNC(void) _Py_CoerceLegacyLocale(const _PyCoreConfig *config);
 PyAPI_FUNC(int) _Py_LegacyLocaleDetected(void);
 PyAPI_FUNC(char *) _Py_SetLocaleFromEnv(int category);
 #endif
+#ifdef Py_BUILD_CORE
+PyAPI_FUNC(int) _Py_IsLocaleCoercionTarget(const char *ctype_loc);
+#endif
 
 #ifdef __cplusplus
 }