From: Guido van Rossum <guido@python.org>
Date: Fri, 11 Apr 1997 21:57:53 +0000 (+0000)
Subject: Change in when and how stdin and stdout are set to line-buffering.
X-Git-Tag: v1.5a1~157
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2a212191f8bd19c2deab88764b894dd31f39af78;p=python

Change in when and how stdin and stdout are set to line-buffering.
This used to be done whenever stdin was interactive.  Now we only do
it when the -i flag is given.  Also (and this is the real reason for
this fix) we explicitly allocate a buffer -- this seems to be
necessary on Windows.
---

diff --git a/Modules/main.c b/Modules/main.c
index 0cab825157..3057e46f83 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -203,9 +203,11 @@ main(argc, argv)
 		setvbuf(stderr, (char *)NULL, _IOLBF, BUFSIZ);
 #endif
 	}
-	else if (stdin_is_interactive) {
-		setvbuf(stdin,  (char *)NULL, _IOLBF, BUFSIZ);
-		setvbuf(stdout, (char *)NULL, _IOLBF, BUFSIZ);
+	else if (Py_InteractiveFlag) {
+		char *ibuffer = malloc(BUFSIZ);
+		char *obuffer = malloc(BUFSIZ);
+		setvbuf(stdin,  ibuffer, _IOLBF, BUFSIZ);
+		setvbuf(stdout, obuffer, _IOLBF, BUFSIZ);
 		/* Leave stderr alone - it should be unbuffered anyway. */
   	}