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-rw-r--r--Python/pythonrun.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index d0c5b2bf34..b3866cebb8 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1634,6 +1634,8 @@ void
Py_FatalError(const char *msg)
{
fprintf(stderr, "Fatal Python error: %s\n", msg);
+ fflush(stderr); /* it helps in Windows debug build */
+
#ifdef MS_WINDOWS
{
size_t len = strlen(msg);