From: Guido van Rossum <guido@python.org>
Date: Mon, 27 Apr 1998 19:01:08 +0000 (+0000)
Subject: Clear the error condition set by ftell().
X-Git-Tag: v1.5.2a1~813
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d30dc0a55ef1c9987babe52c1af390c807808c05;p=python

Clear the error condition set by ftell().
---

diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index 49517c5c26..b744ab427b 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -416,6 +416,8 @@ new_buffersize(f, currentsize)
 	if (fstat(fileno(f->f_fp), &st) == 0) {
 		end = st.st_size;
 		pos = ftell(f->f_fp);
+		if (pos < 0)
+			clearerr(f->f_fp);
 		if (end > pos && pos >= 0)
 			return end - pos + 1;
 		/* Add 1 so if the file were to grow we'd notice. */