Bug 61149 – [debug feature] WTFString should have show() method

• Component: Tools / Tests
• Status: RESOLVED FIXED

[Ryosuke Niwa]

gdb that comes with XCode 3 doesn't support printing WTFString.  We should add a show() method to WTFString to ease the pain.

[Anders Carlsson]

Yes please. I'm getting tired of gdb crashing when trying to print WTF Strings using p string.utf8().data();

[Ryosuke Niwa]

(In reply to comment #1)
> Yes please. I'm getting tired of gdb crashing when trying to print WTF Strings using p string.utf8().data();

Yeah, that gdb bug is driving me nuts.  I don't remember how many times I had to spend minutes getting into the right breakpoint and the first "p ~~" crashed :(

[Ryosuke Niwa]

Created attachment 94134 [details]
adds String::show

[Ryosuke Niwa]

I wonder if we should also add it to AtomicString and QualifiedName.

[Ryosuke Niwa]

Created attachment 94138 [details]
adds String::show and AtomicString::show

[Ryosuke Niwa]

Adding it to QualifiedName is a bit tricky because we'd have to export String::show from JSC to WebCore so I'll put that aside for now.

[Levi Weintraub]

(In reply to comment #6)
> Adding it to QualifiedName is a bit tricky because we'd have to export String::show from JSC to WebCore so I'll put that aside for now.

The following in your .gdbinit will allow you to type string_print followed by a WTF::String to print it out:

define wchar_print
        echo "

        set $i = 0
        while (1 == 1)
                set $c = (char)(($arg0)[$i++])
                if ($c == '\0')
                        loop_break
                end
                printf "%c", $c
        end

        echo "\n
end

define string_print
	wchar_print ($arg0)
end

Just sayin' ;)

[Ryosuke Niwa]

Any reviewer?

[Eric Seidel (no email)]

Comment on attachment 94138 [details]
adds String::show and AtomicString::show

OK.

[Eric Seidel (no email)]

Since Darin authored many of our string classes, I figure he might like to see this go by, but it looks like you already CC'd him.  Thanks.

[Ryosuke Niwa]

Thanks for the review!

[Ryosuke Niwa]

We can always remove this if it turns out be redundant or useless.

[Ryosuke Niwa]

Committed r87438: <http://trac.webkit.org/changeset/87438>