Bug 162261 – [GTK] webkit-2.14.0 fails to build with clang/libc++ due to std::function usage

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Jeremy Huddleston Sequoia]

2.14.0 fails to build.  2.13.91 built fine.  I didn't get a chance to test 2.13.92 in the few days it was available before 2.14.0 was released.

webkitgtk-2.14.0/Source/WebCore/platform/gtk/PasteboardHelper.h:49:75: error: no type named 'function' in namespace 'std'
    void writeClipboardContents(GtkClipboard*, const DataObjectGtk&, std::function<void()>&& primarySelectionCleared = nullptr);
                                                                     ~~~~~^
webkitgtk-2.14.0/Source/WebCore/platform/gtk/PasteboardHelper.h:49:83: error: expected ')'
    void writeClipboardContents(GtkClipboard*, const DataObjectGtk&, std::function<void()>&& primarySelectionCleared = nullptr);
                                                                                  ^
webkitgtk-2.14.0/Source/WebCore/platform/gtk/PasteboardHelper.h:49:32: note: to match this '('
    void writeClipboardContents(GtkClipboard*, const DataObjectGtk&, std::function<void()>&& primarySelectionCleared = nullptr);
                               ^

It looks like this regressed last week with:

commit e49e53a12bad70cca80c704e8ee2521dfd759d2c
Author: [e-mail] <[e-mail]@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Date:   Wed Sep 14 16:45:48 2016 +0000

    [GTK][Wayland] Implement clipboard support
    https://bugs.webkit.org/show_bug.cgi?id=146574
    
    Patch by Carlos Garnacho <[e-mail]> on 2016-09-14
    Reviewed by Carlos Garcia Campos.

[Jeremy Huddleston Sequoia]

We're building with recent libc++ and -std=c++1y.  It looked like maybe a missing include of <functional>, but that's not it.

My C++ is a bit on the weak side, but I'll try to dig into it when I get some cycles.

[Carlos Garcia Campos]

I guess you are building on Mac, right?

[Carlos Garcia Campos]

*** Bug 162268 has been marked as a duplicate of this bug. ***

[Armin K.]

To note what I said in bug that was marked as duplicate of this one:

Solution was to add #include <functional> to Source/WebCore/platform/gtk/PasteboardHelper.h and Source/WebCore/platform/PlatformPasteboard.h

[Jeremy Huddleston Sequoia]

Thanks Armin, I added that to Source/WebCore/platform/gtk/PasteboardHelper.h but not Source/WebCore/platform/PlatformPasteboard.h.  That seems to address the issue for me (although we did hit another build failure after that, which I have a fix for as well).  I'll get patches added.

[Jeremy Huddleston Sequoia]

Created attachment 289381 [details]
0001-GTK-Fix-build-failure-in-clipboard-support

[WebKit Commit Bot]

Attachment 289381 [details] did not pass style-queue:


ERROR: Source/WebCore/ChangeLog:8:  You should remove the 'No new tests' and either add and list tests, or explain why no new tests were possible.  [changelog/nonewtests] [5]
Total errors found: 1 in 3 files


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

[Jeremy Huddleston Sequoia]

Created attachment 289388 [details]
0001-GTK-Fix-build-failure-in-clipboard-support

[Alex Christensen]

Comment on attachment 289388 [details]
0001-GTK-Fix-build-failure-in-clipboard-support

The include should go just before the first #include <wtf/...> in these cases to comply with WebKit alphabetization rules.

[Michael Catanzaro]

EWS says:

Parsed 3 diffs from patch file(s).
patching file Source/WebCore/ChangeLog
patch: **** malformed patch at line 32:

[Jeremy Huddleston Sequoia]

Created attachment 289434 [details]
0001-GTK-Fix-build-failure-in-clipboard-support

[Jeremy Huddleston Sequoia]

(In reply to comment #9)
> The include should go just before the first #include <wtf/...> in these
> cases to comply with WebKit alphabetization rules.

Done, thanks.

[Carlos Garcia Campos]

Comment on attachment 289434 [details]
0001-GTK-Fix-build-failure-in-clipboard-support

Thanks!

[WebKit Commit Bot]

Comment on attachment 289434 [details]
0001-GTK-Fix-build-failure-in-clipboard-support

Clearing flags on attachment: 289434

Committed r206200: <http://trac.webkit.org/changeset/206200>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.