Bug 123502 – [GTK] invalid application of 'sizeof' to incomplete type

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Emilio Pozuelo Monfort]

Building webkitgtk+ 2.3.1 with GCC 4.8

While compiling Source/WebKit2/Shared/WebKeyboardEvent.cpp I've got:

In file included from ../Source/WebKit2/Shared/WebCoreArgumentCoders.h:29:0,
                 from ../Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:27:
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h: In instantiation of 'static void CoreIPC::SimpleArgumentCoder<T>::encode(CoreIPC::ArgumentEncoder&, const T&) [with T = WebCore::TransformationMatrix]':
../Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:77:48:   required from here
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:42:83: error: invalid application of 'sizeof' to incomplete type 'WebCore::TransformationMatrix'
         encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                   ^
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:42:100: error: invalid application of '__alignof__' to incomplete type 'WebCore::TransformationMatrix'
         encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                                    ^
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h: In instantiation of 'static bool CoreIPC::SimpleArgumentCoder<T>::decode(CoreIPC::ArgumentDecoder&, T&) [with T = WebCore::TransformationMatrix]':
../Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:82:55:   required from here
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:47:84: error: invalid application of 'sizeof' to incomplete type 'WebCore::TransformationMatrix'
         return decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                    ^
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:47:101: error: invalid application of '__alignof__' to incomplete type 'WebCore::TransformationMatrix'
         return decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                                     ^
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h: In instantiation of 'static void CoreIPC::SimpleArgumentCoder<T>::encode(CoreIPC::ArgumentEncoder&, const T&) [with T = WebCore::FloatPoint3D]':
../Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:99:40:   required from here
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:42:83: error: invalid application of 'sizeof' to incomplete type 'WebCore::FloatPoint3D'
         encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                   ^
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:42:100: error: invalid application of '__alignof__' to incomplete type 'WebCore::FloatPoint3D'
         encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                                    ^
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h: In instantiation of 'static bool CoreIPC::SimpleArgumentCoder<T>::decode(CoreIPC::ArgumentDecoder&, T&) [with T = WebCore::FloatPoint3D]':
../Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:104:47:   required from here
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:47:84: error: invalid application of 'sizeof' to incomplete type 'WebCore::FloatPoint3D'
         return decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                    ^
../Source/WebKit2/Platform/CoreIPC/ArgumentCoders.h:47:101: error: invalid application of '__alignof__' to incomplete type 'WebCore::FloatPoint3D'
         return decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(&t), sizeof(T), __alignof(T));
                                                                                                     ^

[Zan Dobersek]

Can you please attach the config.log file?

[Vitaly Katunin]

Created attachment 215637 [details]
config.log of build failing

Hi Zan!

I have the same problem on my machine.
Could you please see my config.log.

Br,
Vitaly

[Vitaly Katunin]

Created attachment 215639 [details]
diff to fix build failing

Zan,

this patch fixes the build problem.
Please review it.

Br,
Vitaly

[WebKit Commit Bot]

Attachment 215639 [details] did not pass style-queue:

Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebKit2/Shared/WebCoreArgumentCoders.cpp']" exit_code: 1
Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:56:  Alphabetical sorting problem.  [build/include_order] [4]
Total errors found: 1 in 1 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Zan Dobersek]

The patch looks OK, but requires a ChangeLog entry. The style error should also be addressed.
More on what tools to use to produce the ChangeLog here: http://www.webkit.org/coding/contributing.html

[Vitaly Katunin]

Created attachment 215644 [details]
Patch

[Carlos Garcia Campos]

Comment on attachment 215644 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=215644&action=review

> Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:28
> +#include <WebCore/TransformationMatrix.h>

I think this should be added below, not here, right after #include <WebCore/TextCheckerClient.h>

[Vitaly Katunin]

Created attachment 215647 [details]
Patch

[Vitaly Katunin]

(In reply to comment #7)
Carlos,

thank you for review. Done.

> (From update of attachment 215644 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=215644&action=review
> 
> > Source/WebKit2/Shared/WebCoreArgumentCoders.cpp:28
> > +#include <WebCore/TransformationMatrix.h>
> 
> I think this should be added below, not here, right after #include <WebCore/TextCheckerClient.h>

[Vitaly Katunin]

Gentlemen,

can anybody with commit-privileges commit changes?
Thanks in advance!

Br, 
Vitaly

[WebKit Commit Bot]

Comment on attachment 215647 [details]
Patch

Clearing flags on attachment: 215647

Committed r158486: <http://trac.webkit.org/changeset/158486>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Csaba Osztrogonác]

Comment on attachment 215639 [details]
diff to fix build failing

Cleared review? from attachment 215639 [details] so that this bug does not appear in http://webkit.org/pending-review.  If you would like this patch reviewed, please attach it to a new bug (or re-open this bug before marking it for review again).