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| author | Bruno Haible <bruno@clisp.org> | 2005-04-11 11:52:27 +0000 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2005-04-11 11:52:27 +0000 |
| commit | a83726a9f1db54da8af0b87db1e693bf91886ca5 (patch) | |
| tree | 757e17b470fa31da7f6fd2be3a1a23c3d52cb0f4 /lib/mbswidth.c | |
| parent | 5e2e45b222a2b605ad7319896497e972394268e1 (diff) | |
| download | gnulib-a83726a9f1db54da8af0b87db1e693bf91886ca5.tar.gz | |
Add comment about possible integer overflow.
Diffstat (limited to 'lib/mbswidth.c')
| -rw-r--r-- | lib/mbswidth.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/mbswidth.c b/lib/mbswidth.c index a51176026d..4c79815e53 100644 --- a/lib/mbswidth.c +++ b/lib/mbswidth.c @@ -1,5 +1,5 @@ /* Determine the number of screen columns needed for a string. - Copyright (C) 2000-2004 Free Software Foundation, Inc. + Copyright (C) 2000-2005 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -91,7 +91,8 @@ int wcwidth (); character string pointed to by STRING. If a non-printable character occurs, and MBSW_REJECT_UNPRINTABLE is specified, -1 is returned. With flags = MBSW_REJECT_INVALID | MBSW_REJECT_UNPRINTABLE, this is - the multibyte analogue of the wcswidth function. */ + the multibyte analogue of the wcswidth function. + If STRING is not of length < INT_MAX / 2, integer overflow can occur. */ int mbswidth (const char *string, int flags) { @@ -101,7 +102,8 @@ mbswidth (const char *string, int flags) /* Returns the number of columns needed to represent the multibyte character string pointed to by STRING of length NBYTES. If a non-printable character occurs, and MBSW_REJECT_UNPRINTABLE is - specified, -1 is returned. */ + specified, -1 is returned. + If NBYTES is not < INT_MAX / 2, integer overflow can occur. */ int mbsnwidth (const char *string, size_t nbytes, int flags) { |