std::string & the debugger

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Mark Alldritt - 15 Dec 2003 01:27 GMT

Hi,

I'm sorry if this has been asked and answered, but nothing came up with I
searched.

I've switched from CW8.3 to 9.1. I am trying to look the content of my
std::string variables and its much harder to get at the actual string data.
Also, I have my own specialization of basic_string<unsigned short> which I
have been using for UTF-16 data. The View As Unicode in CW8.3 allowed me to
see this, but in 9.1, its no longer working.

My code calls DataViewLibInit at app startup, but I don't see the data
viewer helping out much.

What do I have to do to (a) get the debugger to show the contents of an
std::string and (b) view UTF-16 data as we once could do?

I'm right on the verge of giving up on 9.1 and going back to 8.3 (except
that 8.3 crashes generating XSYM files for my project -- sigh).

Cheers
-Mark

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MW Ron - 16 Dec 2003 15:32 GMT

Hi Mark,

>I've switched from CW8.3 to 9.1. I am trying to look the content of my
>std::string variables and its much harder to get at the actual string data.
[quoted text clipped - 7 lines]
>What do I have to do to (a) get the debugger to show the contents of an
>std::string and (b) view UTF-16 data as we once could do?

Displaying std::string works fine for me but it doesn't work
that well for std::basic_string<any other type besides char>.

send me an e-mail on this so I can forward it on. Some of the engineers
are off this week, almost everyone will be off the 23rd to the 2nd. So
if you send it to me I can try to catch the right person while they are
working.

>I'm right on the verge of giving up on 9.1 and going back to 8.3 (except
>that 8.3 crashes generating XSYM files for my project -- sigh).

include your system information and all. 9.1 seems to be pretty good
and the annoyances a minimum, it is a keeper, lets just get this fixed.

Ron

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Robert Smith - 17 Dec 2003 15:31 GMT

> >I've switched from CW8.3 to 9.1. I am trying to look the content of my
> >std::string variables and its much harder to get at the actual string data.
[quoted text clipped - 10 lines]
>
> Ron

std::string doesn't always display for me in the debugger. A string
defined in a function will display okay, but once I pass it to a
function (by value or by reference) the debugger just shows the hex
address value. If I toggle the triangles next to the string variable
in the debugger's variables panel I get something like:

s : std::basic_string<char, .... >
r_:
first_:
r:
t0:
words_:
t1:
f_:
cap_:
size_:
data_: char * !! HERE is the string data !!
t2:

> include your system information and all. 9.1 seems to be pretty good
> and the annoyances a minimum,

This is OSX 10.2.8 with CW 9.1 IDE 5.5 Build 1292.

> it is a keeper, lets just get this fixed.

Here, here!

Robert

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Howard Hinnant - 17 Dec 2003 15:40 GMT

> s : std::basic_string<char, .... >
> r_:
[quoted text clipped - 8 lines]
> data_: char * !! HERE is the string data !!
> t2:

Be forwarned that if the size of the string is "short" (10 or under)
then you'll need to look under t2 for the value.

-Howard

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Lally Singh - 21 Dec 2003 07:56 GMT

rsmith@ncbi.nlm.nih.gov (Robert Smith) wrote in message news:

> std::string doesn't always display for me in the debugger. A string
> defined in a function will display okay, but once I pass it to a
[quoted text clipped - 14 lines]
> data_: char * !! HERE is the string data !!
> t2:

So, how about the entry in "MSL Formats.xml" under
Plugins:Support:VariableFormats?

It's got an entry that's supposed to show this stuff, but it doesn't
seem to work for me on
std::basic_string<unsigned short> (unicode strings).

I still haven't figured out the full syntax for the xml files (what
are the possible values for <osname>, <typenamematch>, and
<runtimename> tags?). The paragraph in the IDE user's guide doesn't
tell too much.

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Mark Alldritt - 22 Dec 2003 21:24 GMT

>> s : std::basic_string<char, .... >
>> r_:
[quoted text clipped - 20 lines]
> <runtimename> tags?). The paragraph in the IDE user's guide doesn't
> tell too much.

To add to this, I'm finding that I cannot look at Cocoa/Objetive-C's
NSString in the debugger at all. When I expand the NSString* pointer I see
an isa entry, and nothing else. Makes debugging rather difficult.

Cheers
-Mark

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Lally Singh - 25 Dec 2003 03:01 GMT

lally_spam_box@yahoo.com (Lally Singh) wrote in message news:

> It's got an entry that's supposed to show this stuff, but it doesn't
> seem to work for me on
[quoted text clipped - 4 lines]
> <runtimename> tags?). The paragraph in the IDE user's guide doesn't
> tell too much.

Ok, found the release notes that cover this stuff better. Now it's on
to figure out how to get a unicode string to show up correctly...

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Mac Forum / Programming / CodeWarrior / December 2003

std::string & the debugger