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printf should return negative value on error

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[BZ #11741]
Fixed bug where printf and family may return a spurious success when
printing padded formats.
This commit is contained in:
Siddhesh Poyarekar
2012-11-16 19:13:11 +05:30
parent b1848fdeec
commit 2b766585f9
8 changed files with 92 additions and 29 deletions
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5
libio/libioP.h
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@@ -1,5 +1,4 @@
/* Copyright (C) 1993, 1997-2003,2004,2005,2006,2007,2012
Free Software Foundation, Inc.
/* Copyright (C) 1993-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -167,7 +166,7 @@ typedef int (*_IO_pbackfail_t) (_IO_FILE *, int);
#define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH)
/* The 'xsputn' hook writes upto N characters from buffer DATA.
Returns the number of character actually written.
Returns EOF or the number of character actually written.
It matches the streambuf::xsputn virtual function. */
typedef _IO_size_t (*_IO_xsputn_t) (_IO_FILE *FP, const void *DATA,
_IO_size_t N);