Re: [Boost-bugs] [Boost C++ Libraries] #5086: Fix for possible assertion failure in MSVC isctype.c

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5086: Fix for possible assertion failure in MSVC isctype.c
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-01-22 17:32:50

#5086: Fix for possible assertion failure in MSVC isctype.c
--------------------------------------------------------+-------------------
  Reporter:  Kazutoshi Satoda <k_satoda@…>              |       Owner:  jsiek    
      Type:  Patches                                    |      Status:  new      
 Milestone:  To Be Determined                           |   Component:  tokenizer
   Version:  Boost Development Trunk                    |    Severity:  Problem  
Resolution:                                             |    Keywords:           
--------------------------------------------------------+-------------------

Comment (by marshall):

 I don't see where that's undefined behavior (except on MS-systems)

 Looking at the C specification (since the C++ one defers back to that),
 all I see is:

 7.4.1.9 The isspace function

 '''Synopsis: '''
 {{{
 #include <ctype.h>
 int isspace(int c);
 }}}

 '''Description:''' The isspace function tests for any character that is a
 standard white-space character or is one of a locale-specific set of
 characters for which isalnum is false. The standard white-space characters
 are the following: space (’ ’), form feed (’\f’), new-line (’\n’),
 carriage return (’\r’), horizontal tab (’\t’), and vertical tab (’\v’). In
 the "C" locale, isspace returns true only for the standard white-space
 characters.

 Is there something that I'm missing?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5086#comment:4>
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