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(__argp_fmtstream_update): Avoid crash in handling of overly long words.

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This commit is contained in:
Ulrich Drepper 2002-06-25 18:16:11 +00:00
parent 13cfe89932
commit cf1557437b
1 changed files with 5 additions and 4 deletions
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9
argp/argp-fmtstream.c
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@ -1,5 +1,5 @@
/* Word-wrapping and line-truncating streams
Copyright (C) 1997, 1998, 1999, 2001 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 1999, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Miles Bader <miles@gnu.ai.mit.edu>.
@ -267,9 +267,10 @@ __argp_fmtstream_update (argp_fmtstream_t fs)
at the end of the buffer, and NEXTLINE is in fact empty (and so
we need not be careful to maintain its contents). */
if (nextline == buf + len + 1
? fs->end - nl < fs->wmargin + 1
: nextline - (nl + 1) < fs->wmargin)
if ((nextline == buf + len + 1
? fs->end - nl < fs->wmargin + 1
: nextline - (nl + 1) < fs->wmargin)
&& fs->p > nextline)
{
/* The margin needs more blanks than we removed. */
if (fs->end - fs->p > fs->wmargin + 1)