Issue #22773: fix failing test with old readline versions due to issue #19884.

1 files changed, 14 insertions, 4 deletions

diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 0327830247..bac39c23b4 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -15,6 +15,7 @@
 #include "ast.h"
 #include "marshal.h"
 #include "osdefs.h"
+#include <locale.h>
 
 #ifdef HAVE_SIGNAL_H
 #include <signal.h>
@@ -25,7 +26,6 @@
 #endif
 
 #ifdef HAVE_LANGINFO_H
-#include <locale.h>
 #include <langinfo.h>
 #endif
 
@@ -452,7 +452,8 @@ _Py_InitializeEx_Private(int install_sigs, int install_importlib)
     if (_PyFaulthandler_Init())
         Py_FatalError("Py_Initialize: can't initialize faulthandler");
 
-    _PyTime_Init();
+    if (_PyTime_Init() < 0)
+        Py_FatalError("Py_Initialize: can't initialize time");
 
     if (initfsencoding(interp) < 0)
         Py_FatalError("Py_Initialize: unable to load the file system codec");
@@ -1160,6 +1161,15 @@ initstdio(void)
     encoding = _Py_StandardStreamEncoding;
     errors = _Py_StandardStreamErrors;
     if (!encoding || !errors) {
+        if (!errors) {
+            /* When the LC_CTYPE locale is the POSIX locale ("C locale"),
+               stdin and stdout use the surrogateescape error handler by
+               default, instead of the strict error handler. */
+            char *loc = setlocale(LC_CTYPE, NULL);
+            if (loc != NULL && strcmp(loc, "C") == 0)
+                errors = "surrogateescape";
+        }
+
         pythonioencoding = Py_GETENV("PYTHONIOENCODING");
         if (pythonioencoding) {
             char *err;
@@ -1172,7 +1182,7 @@ initstdio(void)
             if (err) {
                 *err = '\0';
                 err++;
-                if (*err && !errors) {
+                if (*err && !_Py_StandardStreamErrors) {
                     errors = err;
                 }
             }
@@ -1729,7 +1739,7 @@ print_error_text(PyObject *f, int offset, PyObject *text_obj)
         return;
 
     if (offset >= 0) {
-        if (offset > 0 && offset == strlen(text) && text[offset - 1] == '\n')
+        if (offset > 0 && (size_t)offset == strlen(text) && text[offset - 1] == '\n')
             offset--;
         for (;;) {
             nl = strchr(text, '\n');