Re: [bug-gawk] 2 questions

[Denis Shirokov]

damn!

#______________________________________________________________________________
# CASE 3: Using regular expression with [^\x80]

BEGIN{
        t="X\x80YZ"
        if ( match(t,/[^\x80]/) )       print "MATCH!"                          
        else    print "NOT FOUND" }

OUTPUT: (Application crash window appeared; please see attached Error.png)

>gawk -f rexp80_2.gwk
gawk: rexp80_2.gwk:3: fatal error: internal error

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

2012/10/29, Denis Shirokov <address@hidden>:
> oh i'm sorry for some garbage: in CASE #3
>
> #______________________________________________________________________________
> # CASE 3: Using regular expression with [^\x80]
>
> BEGIN{
>       t="X\x80YZ"
>       if ( match(t,/[^\x80]/) )       print "MATCH!" `" substr(t,1,RSTART-1) 
> "' :
> `" substr(t,RSTART,RLENGTH) "' : `" substr(t,RSTART+RLENGTH) "'"
>                                       else    print "NOT FOUND" }
>
> OUTPUT: (Application crash window appeared; please see attached Error.png)
>
>>gawk -f rexp80_2.gwk
> gawk: rexp80_2.gwk:3: fatal error: internal error
>
> This application has requested the Runtime to terminate it in an unusual
> way.
> Please contact the application's support team for more information.
>
> 2012/10/29, Denis Shirokov <address@hidden>:
>> hi
>>
>> I found some gawk crashes while processing regular expressions:
>>
>> #______________________________________________________________________________
>> # CASE 1: Using regular expression with \x80
>>
>> BEGIN{
>>      t="X\x80YZ"
>>      if ( match(t,/\x80/) )  print "MATCH"
>>                                      else    print "NOT MATCH" }
>>
>> OUTPUT:
>>
>>>gawk -f rexp80_1.gwk
>> gawk: rexp80_1.gwk:3: fatal: unbalanced )
>>
>>>
>>
>> #______________________________________________________________________________
>> # CASE 2: Using regular expression with [\x80]
>>
>> BEGIN{
>>      t="X\x80YZ"
>>      if ( match(t,/[\x80]/) )        print "MATCH"
>>                                      else    print "NOT MATCH" }
>>
>> OUTPUT: (Application crash window appeared; please see attached
>> Error.png)
>>
>>>gawk -f rexp80.gwk
>> gawk: rexp80.gwk:3: fatal error: internal error
>>
>> This application has requested the Runtime to terminate it in an unusual
>> way.
>> Please contact the application's support team for more information.
>>
>>>
>>
>> #______________________________________________________________________________
>> # CASE 3: Using regular expression with [^\x80]
>>
>> BEGIN{
>>      t="X\x80YZ"
>>      if ( match(t,/[^\x80]/) )       print "MATCH!" `" substr(t,1,RSTART-1) 
>> "' :
>> `" substr(t,RSTART,RLENGTH) "' : `" substr(t,RSTART+RLENGTH) "'"
>>                                      else    print "NOT FOUND" }
>>
>> OUTPUT: (Application crash window appeared; please see attached
>> Error.png)
>>
>>>gawk -f rexp80_2.gwk
>> gawk: rexp80_2.gwk:3: fatal error: internal error
>>
>> This application has requested the Runtime to terminate it in an unusual
>> way.
>> Please contact the application's support team for more information.
>>
>>>
>>
>> #______________________________________________________________________________
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> 2012/10/28, Aharon Robbins <address@hidden>:
>>> Hello. Re this:
>>>
>>>> Date: Fri, 26 Oct 2012 22:03:24 +0300
>>>> From: Denis Shirokov <address@hidden>
>>>> To: address@hidden
>>>> Subject: [bug-gawk] 2 questions
>>>>
>>>> Hi GAWK!
>>>>
>>>> Would you be so kind to answer for 2 questions:
>>>>
>>>>
>>>> 1) because /\1B\x2A/ response in regexp as /*/ - this mean that regexp
>>>> cant process byte-characters with code \x80-\xFF ? or some of thems?
>>>> is there way to process characters with code \x80-\xFF ?
>>>
>>> In general, you should use printable characters for the code that
>>> are printable, such as '*' for \x2A. Then it becomes clear what
>>> the problem is.
>>>
>>> Gawk can match characters in the range \x80 - \xFF. You simply put
>>> them into the regex that way. Or you can enclose them in square
>>> brackets,
>>> in which case they will generally lose any special meaning.
>>>
>>>> 2) How character "/" being defined in gawk-script:
>>>>  as arithmetic divider (like 1/5 (==0.2), 10/1 (==10), etc...)
>>>> OR
>>>>  as the begining of regexp? (like /2/)
>>>
>>> Both.
>>>
>>>> CAUSE:
>>>>
>>>> 1/2/3      - may mean:(number 1 divided by number 2 divided number by
>>>> 3) ==0.1666666666666667
>>>
>>> This is the interpretation taken by Brian Kernighan's awk, gawk, and
>>> mawk.
>>>
>>>> OR
>>>>
>>>> 1/2/3      - may mean:(number 1 regexp /2/ number 3) =="103"  ( rexp
>>>> /2/==0)
>>>>
>>>> How you  can exactly be sure which expressions is used?
>>>
>>> Awk interpreters generally do the right thing.  You can use parentheses
>>> to force a particular interpretation.
>>>
>>> Arnold
>>>
>>
>